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Finding the Fourth Proportional to 99,287.62, 148,972.95 and 43,174.92

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Solution

The fourth proportional to 99,287.62, 148,972.95 and 43,174.92 is: 64,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,287.62 : 148,972.95 = 43,174.92 : x
  2. Step 2: Convert to fraction form
    99,287.62/148,972.95 = 43,174.92/x
  3. Step 3: Cross multiply
    99,287.62x = 148,972.95 × 43,174.92
  4. Step 4: Simplify right side
    99,287.62x = 6,431,895,198.41
  5. Step 5: Solve for x
    x = 6,431,895,198.41/99,287.62
  6. Step 6: Final answer
    x = 64,780.43

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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.