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Finding the Fourth Proportional to 126.04, 187.74 and 124.42

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Solution

The fourth proportional to 126.04, 187.74 and 124.42 is: 185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.04 : 187.74 = 124.42 : x
  2. Step 2: Convert to fraction form
    126.04/187.74 = 124.42/x
  3. Step 3: Cross multiply
    126.04x = 187.74 × 124.42
  4. Step 4: Simplify right side
    126.04x = 23,357.67
  5. Step 5: Solve for x
    x = 23,357.67/126.04
  6. Step 6: Final answer
    x = 185.33

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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.