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Finding the Fourth Proportional to 99,073.92, 136,753.29 and 66,855.36

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Solution

The fourth proportional to 99,073.92, 136,753.29 and 66,855.36 is: 92,281.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,073.92 : 136,753.29 = 66,855.36 : x
  2. Step 2: Convert to fraction form
    99,073.92/136,753.29 = 66,855.36/x
  3. Step 3: Cross multiply
    99,073.92x = 136,753.29 × 66,855.36
  4. Step 4: Simplify right side
    99,073.92x = 9,142,690,434.13
  5. Step 5: Solve for x
    x = 9,142,690,434.13/99,073.92
  6. Step 6: Final answer
    x = 92,281.50

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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.