I heard (don't know the reliability at all) that it was 150 for Pac, and 148 for JMM. If true, a turn around from their third fight unofficial weights.
I believe it was Pac @ 151 and JMM @147 or 148. But I forget. If I'm wrong it's only by a pound or so. Pac was a few pounds heavier.
They used to show it before fight started, after weighing them in dressing rooms. I guess they don't anymore. The weighing in almost 40 hours before fight screws things up. Guys fighting for 147 pound title coming in so far over it becomes impossible to compare them to old timers for one thing. Last month Canelo weighed in at 154, and came into ring 168. Hagler, Duran, and everyone prior to 1990's weighed in fight about same as what they weighed in at. So to compare, let's say Ray Leonard at 147 to these guys, or Duran, we have to consider they are 10 or more pounds heavier when they fight.
I know *******s don't deal in facts, but let me point you in the direction in case you learn basic counting: Pacquiao vs Marquez IV weigh-in results: Manny Pacquiao 147, Juan Manuel Marquez 143