What is the formula used in geometry for a person 122 cm tall casts a 37cm shadow at the same time a tree casts a 148cm shadow How tall is the tree?

t/148 = 122/37 , where t is the height of the tree.

Cross multiplying gives 37 x t = 148 x 122

ie 37t = 18056 so the tree is 488 cm tall ie 4.88 metres