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Finding the Fourth Proportional to 120,691.72, 181,049.91 and 41,805.80

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Solution

The fourth proportional to 120,691.72, 181,049.91 and 41,805.80 is: 62,712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,691.72 : 181,049.91 = 41,805.80 : x
  2. Step 2: Convert to fraction form
    120,691.72/181,049.91 = 41,805.80/x
  3. Step 3: Cross multiply
    120,691.72x = 181,049.91 × 41,805.80
  4. Step 4: Simplify right side
    120,691.72x = 7,568,936,327.48
  5. Step 5: Solve for x
    x = 7,568,936,327.48/120,691.72
  6. Step 6: Final answer
    x = 62,712.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.