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Finding the Fourth Proportional to 181.13, 249.72 and 125.73

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Solution

The fourth proportional to 181.13, 249.72 and 125.73 is: 173.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.13 : 249.72 = 125.73 : x
  2. Step 2: Convert to fraction form
    181.13/249.72 = 125.73/x
  3. Step 3: Cross multiply
    181.13x = 249.72 × 125.73
  4. Step 4: Simplify right side
    181.13x = 31,397.30
  5. Step 5: Solve for x
    x = 31,397.30/181.13
  6. Step 6: Final answer
    x = 173.35

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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.