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Finding the Fourth Proportional to 120.28, 166.25 and 95.68

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Solution

The fourth proportional to 120.28, 166.25 and 95.68 is: 132.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.28 : 166.25 = 95.68 : x
  2. Step 2: Convert to fraction form
    120.28/166.25 = 95.68/x
  3. Step 3: Cross multiply
    120.28x = 166.25 × 95.68
  4. Step 4: Simplify right side
    120.28x = 15,906.80
  5. Step 5: Solve for x
    x = 15,906.80/120.28
  6. Step 6: Final answer
    x = 132.25

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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.