Home / 261,172.86-391,759.38-71,635.20

Finding the Fourth Proportional to 261,172.86, 391,759.38 and 71,635.20

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Solution

The fourth proportional to 261,172.86, 391,759.38 and 71,635.20 is: 107,452.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,172.86 : 391,759.38 = 71,635.20 : x
  2. Step 2: Convert to fraction form
    261,172.86/391,759.38 = 71,635.20/x
  3. Step 3: Cross multiply
    261,172.86x = 391,759.38 × 71,635.20
  4. Step 4: Simplify right side
    261,172.86x = 28,063,761,538.18
  5. Step 5: Solve for x
    x = 28,063,761,538.18/261,172.86
  6. Step 6: Final answer
    x = 107,452.82

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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.