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Finding the Fourth Proportional to 132.25, 182.45 and 85.61

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Solution

The fourth proportional to 132.25, 182.45 and 85.61 is: 118.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.25 : 182.45 = 85.61 : x
  2. Step 2: Convert to fraction form
    132.25/182.45 = 85.61/x
  3. Step 3: Cross multiply
    132.25x = 182.45 × 85.61
  4. Step 4: Simplify right side
    132.25x = 15,619.54
  5. Step 5: Solve for x
    x = 15,619.54/132.25
  6. Step 6: Final answer
    x = 118.11

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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.