\Pro*por"tion*a*ble\, a.
Capable of being proportioned, or made proportional; also,
proportional; proportionate. -- {Pro*por"tion*a*ble*ness}, n.
      But eloquence may exist without a proportionable degree
      of wisdom.                               --Burke.
      Proportionable, which is no longer much favored, was of
      our [i. e., English writers'] own coining. --Fitzed.
                                               Hall.