Finding the Fourth Proportional to 133,142.18, 183,691.94 and 87,842.66
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Solution
The fourth proportional to 133,142.18, 183,691.94 and 87,842.66 is: 121,193.66
Step by Step Solution
- Step 1: Write the proportion equation
133,142.18 : 183,691.94 = 87,842.66 : x - Step 2: Convert to fraction form
133,142.18/183,691.94 = 87,842.66/x - Step 3: Cross multiply
133,142.18x = 183,691.94 × 87,842.66 - Step 4: Simplify right side
133,142.18x = 16,135,988,630.16 - Step 5: Solve for x
x = 16,135,988,630.16/133,142.18 - Step 6: Final answer
x = 121,193.66
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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.