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Finding the Fourth Proportional to 118.92, 179.01 and 84.92

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Solution

The fourth proportional to 118.92, 179.01 and 84.92 is: 127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.92 : 179.01 = 84.92 : x
  2. Step 2: Convert to fraction form
    118.92/179.01 = 84.92/x
  3. Step 3: Cross multiply
    118.92x = 179.01 × 84.92
  4. Step 4: Simplify right side
    118.92x = 15,201.53
  5. Step 5: Solve for x
    x = 15,201.53/118.92
  6. Step 6: Final answer
    x = 127.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.