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Finding the Fourth Proportional to 169.62, 234.12 and 104.12

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Solution

The fourth proportional to 169.62, 234.12 and 104.12 is: 143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.62 : 234.12 = 104.12 : x
  2. Step 2: Convert to fraction form
    169.62/234.12 = 104.12/x
  3. Step 3: Cross multiply
    169.62x = 234.12 × 104.12
  4. Step 4: Simplify right side
    169.62x = 24,375.40
  5. Step 5: Solve for x
    x = 24,375.40/169.62
  6. Step 6: Final answer
    x = 143.71

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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.