reciprocally

(often followed by `for'') in exchange or in reciprocation

• “gave up our seats on the plane and in return received several hundred dollars and seats on the next plane out”
• “we get many benefits in return for our taxes”

in a mutual or shared manner

• “the agreement was mutually satisfactory”
• “the goals of the negotiators were not reciprocally exclusive”

in an inverse or contrary manner

• “inversely related”
• “wavelength and frequency are, of course, related reciprocally” F.A.Geldard