Finding the Fourth Proportional to 158,232.49, 218,361.17 and 86,617.09
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Solution
The fourth proportional to 158,232.49, 218,361.17 and 86,617.09 is: 119,531.77
Step by Step Solution
- Step 1: Write the proportion equation
158,232.49 : 218,361.17 = 86,617.09 : x - Step 2: Convert to fraction form
158,232.49/218,361.17 = 86,617.09/x - Step 3: Cross multiply
158,232.49x = 218,361.17 × 86,617.09 - Step 4: Simplify right side
158,232.49x = 18,913,809,114.40 - Step 5: Solve for x
x = 18,913,809,114.40/158,232.49 - Step 6: Final answer
x = 119,531.77
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.