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Finding the Fourth Proportional to 126.63, 175.85 and 125.43

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Solution

The fourth proportional to 126.63, 175.85 and 125.43 is: 174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.63 : 175.85 = 125.43 : x
  2. Step 2: Convert to fraction form
    126.63/175.85 = 125.43/x
  3. Step 3: Cross multiply
    126.63x = 175.85 × 125.43
  4. Step 4: Simplify right side
    126.63x = 22,056.24
  5. Step 5: Solve for x
    x = 22,056.24/126.63
  6. Step 6: Final answer
    x = 174.18

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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.