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Finding the Fourth Proportional to 132.02, 182.11 and 90.57

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Solution

The fourth proportional to 132.02, 182.11 and 90.57 is: 124.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.02 : 182.11 = 90.57 : x
  2. Step 2: Convert to fraction form
    132.02/182.11 = 90.57/x
  3. Step 3: Cross multiply
    132.02x = 182.11 × 90.57
  4. Step 4: Simplify right side
    132.02x = 16,493.70
  5. Step 5: Solve for x
    x = 16,493.70/132.02
  6. Step 6: Final answer
    x = 124.93

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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.