Home / 261,187.08-391,781.22-71,650.20

Finding the Fourth Proportional to 261,187.08, 391,781.22 and 71,650.20

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Solution

The fourth proportional to 261,187.08, 391,781.22 and 71,650.20 is: 107,475.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,187.08 : 391,781.22 = 71,650.20 : x
  2. Step 2: Convert to fraction form
    261,187.08/391,781.22 = 71,650.20/x
  3. Step 3: Cross multiply
    261,187.08x = 391,781.22 × 71,650.20
  4. Step 4: Simplify right side
    261,187.08x = 28,071,202,769.24
  5. Step 5: Solve for x
    x = 28,071,202,769.24/261,187.08
  6. Step 6: Final answer
    x = 107,475.46

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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.