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Finding the Fourth Proportional to 99.38, 137.12 and 60.06

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Solution

The fourth proportional to 99.38, 137.12 and 60.06 is: 82.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.38 : 137.12 = 60.06 : x
  2. Step 2: Convert to fraction form
    99.38/137.12 = 60.06/x
  3. Step 3: Cross multiply
    99.38x = 137.12 × 60.06
  4. Step 4: Simplify right side
    99.38x = 8,235.43
  5. Step 5: Solve for x
    x = 8,235.43/99.38
  6. Step 6: Final answer
    x = 82.87

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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.