@GIRUGAMESH: Yeah I agree with this. Even the x50 power up from turning SSJ became incredibly inconsistent later on in the series, especially after they introduced SS2 and 3. There's no way it was x50 increase after those two transformations came.
I've heard that originally Toriyama wanted to stop the manga after the Frieza saga but the fans and probably the money made him carry on. It's kind of reflected in the story really because a lot of things that made sense before the Frieza saga got thrown out the window and the whole manga became very inconsistent because of it. Power levels in particular became very skewed.
But like Girugamesh said, at least you tried to rationalise the power levels and we commend you for trying.