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Finding the Fourth Proportional to 124.54, 187.01 and 63.79

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Solution

The fourth proportional to 124.54, 187.01 and 63.79 is: 95.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.54 : 187.01 = 63.79 : x
  2. Step 2: Convert to fraction form
    124.54/187.01 = 63.79/x
  3. Step 3: Cross multiply
    124.54x = 187.01 × 63.79
  4. Step 4: Simplify right side
    124.54x = 11,928.82
  5. Step 5: Solve for x
    x = 11,928.82/124.54
  6. Step 6: Final answer
    x = 95.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.