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Finding the Fourth Proportional to 132.11, 182.24 and 87.86

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Solution

The fourth proportional to 132.11, 182.24 and 87.86 is: 121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.11 : 182.24 = 87.86 : x
  2. Step 2: Convert to fraction form
    132.11/182.24 = 87.86/x
  3. Step 3: Cross multiply
    132.11x = 182.24 × 87.86
  4. Step 4: Simplify right side
    132.11x = 16,010.26
  5. Step 5: Solve for x
    x = 16,010.26/132.11
  6. Step 6: Final answer
    x = 121.19

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