Below you can see the front-view size comparison of the Fujifilm XP90 and Ricoh GXR P10 28-300mm. The Fujifilm XP90 is 4 mm narrower and 22 mm thinner than the Ricoh GXR P10 28-300mm but it is also 13 mm taller.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.