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Finding the Fourth Proportional to 129.07, 177.80 and 96.27

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Solution

The fourth proportional to 129.07, 177.80 and 96.27 is: 132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129.07 : 177.80 = 96.27 : x
  2. Step 2: Convert to fraction form
    129.07/177.80 = 96.27/x
  3. Step 3: Cross multiply
    129.07x = 177.80 × 96.27
  4. Step 4: Simplify right side
    129.07x = 17,115.44
  5. Step 5: Solve for x
    x = 17,115.44/129.07
  6. Step 6: Final answer
    x = 132.61

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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.