Finding the Fourth Proportional to 133,132.09, 183,715.44 and 72,691.09
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Solution
The fourth proportional to 133,132.09, 183,715.44 and 72,691.09 is: 100,309.97
Step by Step Solution
- Step 1: Write the proportion equation
133,132.09 : 183,715.44 = 72,691.09 : x - Step 2: Convert to fraction form
133,132.09/183,715.44 = 72,691.09/x - Step 3: Cross multiply
133,132.09x = 183,715.44 × 72,691.09 - Step 4: Simplify right side
133,132.09x = 13,354,475,583.43 - Step 5: Solve for x
x = 13,354,475,583.43/133,132.09 - Step 6: Final answer
x = 100,309.97
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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.