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Finding the Fourth Proportional to 126.24, 173.18 and 124.92

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Solution

The fourth proportional to 126.24, 173.18 and 124.92 is: 171.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.24 : 173.18 = 124.92 : x
  2. Step 2: Convert to fraction form
    126.24/173.18 = 124.92/x
  3. Step 3: Cross multiply
    126.24x = 173.18 × 124.92
  4. Step 4: Simplify right side
    126.24x = 21,633.65
  5. Step 5: Solve for x
    x = 21,633.65/126.24
  6. Step 6: Final answer
    x = 171.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.