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Finding the Fourth Proportional to 126.18, 173.16 and 124.83

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Solution

The fourth proportional to 126.18, 173.16 and 124.83 is: 171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.18 : 173.16 = 124.83 : x
  2. Step 2: Convert to fraction form
    126.18/173.16 = 124.83/x
  3. Step 3: Cross multiply
    126.18x = 173.16 × 124.83
  4. Step 4: Simplify right side
    126.18x = 21,615.56
  5. Step 5: Solve for x
    x = 21,615.56/126.18
  6. Step 6: Final answer
    x = 171.31

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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.