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Finding the Fourth Proportional to 95.85, 132.26 and 81.27

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Solution

The fourth proportional to 95.85, 132.26 and 81.27 is: 112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.85 : 132.26 = 81.27 : x
  2. Step 2: Convert to fraction form
    95.85/132.26 = 81.27/x
  3. Step 3: Cross multiply
    95.85x = 132.26 × 81.27
  4. Step 4: Simplify right side
    95.85x = 10,748.77
  5. Step 5: Solve for x
    x = 10,748.77/95.85
  6. Step 6: Final answer
    x = 112.14

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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.