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Finding the Fourth Proportional to 108,049.97, 148,930.49 and 72,226.91

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Solution

The fourth proportional to 108,049.97, 148,930.49 and 72,226.91 is: 99,553.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,049.97 : 148,930.49 = 72,226.91 : x
  2. Step 2: Convert to fraction form
    108,049.97/148,930.49 = 72,226.91/x
  3. Step 3: Cross multiply
    108,049.97x = 148,930.49 × 72,226.91
  4. Step 4: Simplify right side
    108,049.97x = 10,756,787,991.70
  5. Step 5: Solve for x
    x = 10,756,787,991.70/108,049.97
  6. Step 6: Final answer
    x = 99,553.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.