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Finding the Fourth Proportional to 126.32, 175.04 and 124.16

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Solution

The fourth proportional to 126.32, 175.04 and 124.16 is: 172.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.32 : 175.04 = 124.16 : x
  2. Step 2: Convert to fraction form
    126.32/175.04 = 124.16/x
  3. Step 3: Cross multiply
    126.32x = 175.04 × 124.16
  4. Step 4: Simplify right side
    126.32x = 21,732.97
  5. Step 5: Solve for x
    x = 21,732.97/126.32
  6. Step 6: Final answer
    x = 172.05

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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.