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Finding the Fourth Proportional to 132.15, 182.09 and 127.61

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Solution

The fourth proportional to 132.15, 182.09 and 127.61 is: 175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.15 : 182.09 = 127.61 : x
  2. Step 2: Convert to fraction form
    132.15/182.09 = 127.61/x
  3. Step 3: Cross multiply
    132.15x = 182.09 × 127.61
  4. Step 4: Simplify right side
    132.15x = 23,234.96
  5. Step 5: Solve for x
    x = 23,234.96/132.15
  6. Step 6: Final answer
    x = 175.82

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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.