Home / 261,103.92-391,592.30-109,218.90

Finding the Fourth Proportional to 261,103.92, 391,592.30 and 109,218.90

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Solution

The fourth proportional to 261,103.92, 391,592.30 and 109,218.90 is: 163,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,103.92 : 391,592.30 = 109,218.90 : x
  2. Step 2: Convert to fraction form
    261,103.92/391,592.30 = 109,218.90/x
  3. Step 3: Cross multiply
    261,103.92x = 391,592.30 × 109,218.90
  4. Step 4: Simplify right side
    261,103.92x = 42,769,279,708.38
  5. Step 5: Solve for x
    x = 42,769,279,708.38/261,103.92
  6. Step 6: Final answer
    x = 163,801.75

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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.