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Finding the Fourth Proportional to 132.24, 180.12 and 131.88

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Solution

The fourth proportional to 132.24, 180.12 and 131.88 is: 179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.24 : 180.12 = 131.88 : x
  2. Step 2: Convert to fraction form
    132.24/180.12 = 131.88/x
  3. Step 3: Cross multiply
    132.24x = 180.12 × 131.88
  4. Step 4: Simplify right side
    132.24x = 23,754.23
  5. Step 5: Solve for x
    x = 23,754.23/132.24
  6. Step 6: Final answer
    x = 179.63

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.