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Finding the Fourth Proportional to 168.31, 232.01 and 112.92

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Solution

The fourth proportional to 168.31, 232.01 and 112.92 is: 155.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.31 : 232.01 = 112.92 : x
  2. Step 2: Convert to fraction form
    168.31/232.01 = 112.92/x
  3. Step 3: Cross multiply
    168.31x = 232.01 × 112.92
  4. Step 4: Simplify right side
    168.31x = 26,198.57
  5. Step 5: Solve for x
    x = 26,198.57/168.31
  6. Step 6: Final answer
    x = 155.66

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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.