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Finding the Fourth Proportional to 168.55, 232.56 and 102.14

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Solution

The fourth proportional to 168.55, 232.56 and 102.14 is: 140.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.55 : 232.56 = 102.14 : x
  2. Step 2: Convert to fraction form
    168.55/232.56 = 102.14/x
  3. Step 3: Cross multiply
    168.55x = 232.56 × 102.14
  4. Step 4: Simplify right side
    168.55x = 23,753.68
  5. Step 5: Solve for x
    x = 23,753.68/168.55
  6. Step 6: Final answer
    x = 140.93

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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.