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Finding the Fourth Proportional to 126.46, 174.17 and 98.92

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Solution

The fourth proportional to 126.46, 174.17 and 98.92 is: 136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.46 : 174.17 = 98.92 : x
  2. Step 2: Convert to fraction form
    126.46/174.17 = 98.92/x
  3. Step 3: Cross multiply
    126.46x = 174.17 × 98.92
  4. Step 4: Simplify right side
    126.46x = 17,227.53
  5. Step 5: Solve for x
    x = 17,227.53/126.46
  6. Step 6: Final answer
    x = 136.23

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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.