Home / 198,581.17-297,778.17-72,132.27

Finding the Fourth Proportional to 198,581.17, 297,778.17 and 72,132.27

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Solution

The fourth proportional to 198,581.17, 297,778.17 and 72,132.27 is: 108,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,581.17 : 297,778.17 = 72,132.27 : x
  2. Step 2: Convert to fraction form
    198,581.17/297,778.17 = 72,132.27/x
  3. Step 3: Cross multiply
    198,581.17x = 297,778.17 × 72,132.27
  4. Step 4: Simplify right side
    198,581.17x = 21,479,416,187.38
  5. Step 5: Solve for x
    x = 21,479,416,187.38/198,581.17
  6. Step 6: Final answer
    x = 108,164.42

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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.