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Finding the Fourth Proportional to 168.23, 232.13 and 115.82

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Solution

The fourth proportional to 168.23, 232.13 and 115.82 is: 159.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.23 : 232.13 = 115.82 : x
  2. Step 2: Convert to fraction form
    168.23/232.13 = 115.82/x
  3. Step 3: Cross multiply
    168.23x = 232.13 × 115.82
  4. Step 4: Simplify right side
    168.23x = 26,885.30
  5. Step 5: Solve for x
    x = 26,885.30/168.23
  6. Step 6: Final answer
    x = 159.81

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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.