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Finding the Fourth Proportional to 124.41, 187.48 and 112.23

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Solution

The fourth proportional to 124.41, 187.48 and 112.23 is: 169.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.41 : 187.48 = 112.23 : x
  2. Step 2: Convert to fraction form
    124.41/187.48 = 112.23/x
  3. Step 3: Cross multiply
    124.41x = 187.48 × 112.23
  4. Step 4: Simplify right side
    124.41x = 21,040.88
  5. Step 5: Solve for x
    x = 21,040.88/124.41
  6. Step 6: Final answer
    x = 169.13

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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.