Finding the Fourth Proportional to 208,139.50, 287,231.97 and 112,646.17
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Solution
The fourth proportional to 208,139.50, 287,231.97 and 112,646.17 is: 155,451.42
Step by Step Solution
- Step 1: Write the proportion equation
208,139.50 : 287,231.97 = 112,646.17 : x - Step 2: Convert to fraction form
208,139.50/287,231.97 = 112,646.17/x - Step 3: Cross multiply
208,139.50x = 287,231.97 × 112,646.17 - Step 4: Simplify right side
208,139.50x = 32,355,581,322.05 - Step 5: Solve for x
x = 32,355,581,322.05/208,139.50 - Step 6: Final answer
x = 155,451.42
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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.