Finding the Fourth Proportional to 159,001.38, 219,426.57 and 87,381.99
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Solution
The fourth proportional to 159,001.38, 219,426.57 and 87,381.99 is: 120,589.71
Step by Step Solution
- Step 1: Write the proportion equation
159,001.38 : 219,426.57 = 87,381.99 : x - Step 2: Convert to fraction form
159,001.38/219,426.57 = 87,381.99/x - Step 3: Cross multiply
159,001.38x = 219,426.57 × 87,381.99 - Step 4: Simplify right side
159,001.38x = 19,173,930,345.47 - Step 5: Solve for x
x = 19,173,930,345.47/159,001.38 - Step 6: Final answer
x = 120,589.71
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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.