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Finding the Fourth Proportional to 132.35, 182.61 and 77.09

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Solution

The fourth proportional to 132.35, 182.61 and 77.09 is: 106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.35 : 182.61 = 77.09 : x
  2. Step 2: Convert to fraction form
    132.35/182.61 = 77.09/x
  3. Step 3: Cross multiply
    132.35x = 182.61 × 77.09
  4. Step 4: Simplify right side
    132.35x = 14,076.49
  5. Step 5: Solve for x
    x = 14,076.49/132.35
  6. Step 6: Final answer
    x = 106.36

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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.