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Finding the Fourth Proportional to 124.92, 185.91 and 120.92

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Solution

The fourth proportional to 124.92, 185.91 and 120.92 is: 179.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.92 : 185.91 = 120.92 : x
  2. Step 2: Convert to fraction form
    124.92/185.91 = 120.92/x
  3. Step 3: Cross multiply
    124.92x = 185.91 × 120.92
  4. Step 4: Simplify right side
    124.92x = 22,480.24
  5. Step 5: Solve for x
    x = 22,480.24/124.92
  6. Step 6: Final answer
    x = 179.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.