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Finding the Fourth Proportional to 126.15, 173.61 and 116.97

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Solution

The fourth proportional to 126.15, 173.61 and 116.97 is: 160.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.15 : 173.61 = 116.97 : x
  2. Step 2: Convert to fraction form
    126.15/173.61 = 116.97/x
  3. Step 3: Cross multiply
    126.15x = 173.61 × 116.97
  4. Step 4: Simplify right side
    126.15x = 20,307.16
  5. Step 5: Solve for x
    x = 20,307.16/126.15
  6. Step 6: Final answer
    x = 160.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.