Is the boss battle difficulty linear?

[HunterKiller]

I am fighting the level 101-150 boss, and just beat level 25 pretty easily,
So I was wondering if level 50 is simply twice as hard? :confused:
If that is the case then I should make it, hopefully :rolleyes:

[Mcdoc]

It is less like linear and more like exponential. :/

[Q Raider]

Boss 35 is roughly double boss 25 so it was approx 2 million.
Boss 40 was something under 2.7 million.
Boss 42 looks to have something under 3.3million

Rough guess puts Boss 50 at around 5 million.

Edit: Ranger4life has it at less than 4.88 million

[HunterKiller]

Thanks for your help guys, I may not get to 50 but I should get a bunch more prizes yet.