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Finding the Fourth Proportional to 126.54, 175.47 and 124.92

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Solution

The fourth proportional to 126.54, 175.47 and 124.92 is: 173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.54 : 175.47 = 124.92 : x
  2. Step 2: Convert to fraction form
    126.54/175.47 = 124.92/x
  3. Step 3: Cross multiply
    126.54x = 175.47 × 124.92
  4. Step 4: Simplify right side
    126.54x = 21,919.71
  5. Step 5: Solve for x
    x = 21,919.71/126.54
  6. Step 6: Final answer
    x = 173.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.