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Finding the Fourth Proportional to 114.27, 171.68 and 80.12

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Solution

The fourth proportional to 114.27, 171.68 and 80.12 is: 120.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.27 : 171.68 = 80.12 : x
  2. Step 2: Convert to fraction form
    114.27/171.68 = 80.12/x
  3. Step 3: Cross multiply
    114.27x = 171.68 × 80.12
  4. Step 4: Simplify right side
    114.27x = 13,753.74
  5. Step 5: Solve for x
    x = 13,753.74/114.27
  6. Step 6: Final answer
    x = 120.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.