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Finding the Fourth Proportional to 124.46, 169.37 and 123.85

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Solution

The fourth proportional to 124.46, 169.37 and 123.85 is: 168.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.46 : 169.37 = 123.85 : x
  2. Step 2: Convert to fraction form
    124.46/169.37 = 123.85/x
  3. Step 3: Cross multiply
    124.46x = 169.37 × 123.85
  4. Step 4: Simplify right side
    124.46x = 20,976.47
  5. Step 5: Solve for x
    x = 20,976.47/124.46
  6. Step 6: Final answer
    x = 168.54

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.