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Finding the Fourth Proportional to 132.92, 183.39 and 86.29

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Solution

The fourth proportional to 132.92, 183.39 and 86.29 is: 119.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.92 : 183.39 = 86.29 : x
  2. Step 2: Convert to fraction form
    132.92/183.39 = 86.29/x
  3. Step 3: Cross multiply
    132.92x = 183.39 × 86.29
  4. Step 4: Simplify right side
    132.92x = 15,824.72
  5. Step 5: Solve for x
    x = 15,824.72/132.92
  6. Step 6: Final answer
    x = 119.05

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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.