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Finding the Fourth Proportional to 126.92, 175.04 and 97.42

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Solution

The fourth proportional to 126.92, 175.04 and 97.42 is: 134.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.92 : 175.04 = 97.42 : x
  2. Step 2: Convert to fraction form
    126.92/175.04 = 97.42/x
  3. Step 3: Cross multiply
    126.92x = 175.04 × 97.42
  4. Step 4: Simplify right side
    126.92x = 17,052.40
  5. Step 5: Solve for x
    x = 17,052.40/126.92
  6. Step 6: Final answer
    x = 134.36

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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.