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Finding the Fourth Proportional to 124.97, 188.87 and 122.84

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Solution

The fourth proportional to 124.97, 188.87 and 122.84 is: 185.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.97 : 188.87 = 122.84 : x
  2. Step 2: Convert to fraction form
    124.97/188.87 = 122.84/x
  3. Step 3: Cross multiply
    124.97x = 188.87 × 122.84
  4. Step 4: Simplify right side
    124.97x = 23,200.79
  5. Step 5: Solve for x
    x = 23,200.79/124.97
  6. Step 6: Final answer
    x = 185.65

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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.