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Finding the Fourth Proportional to 124.57, 187.81 and 122.95

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Solution

The fourth proportional to 124.57, 187.81 and 122.95 is: 185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.57 : 187.81 = 122.95 : x
  2. Step 2: Convert to fraction form
    124.57/187.81 = 122.95/x
  3. Step 3: Cross multiply
    124.57x = 187.81 × 122.95
  4. Step 4: Simplify right side
    124.57x = 23,091.24
  5. Step 5: Solve for x
    x = 23,091.24/124.57
  6. Step 6: Final answer
    x = 185.37

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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.