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Finding the Fourth Proportional to 141.13, 194.33 and 129.44

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Solution

The fourth proportional to 141.13, 194.33 and 129.44 is: 178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.13 : 194.33 = 129.44 : x
  2. Step 2: Convert to fraction form
    141.13/194.33 = 129.44/x
  3. Step 3: Cross multiply
    141.13x = 194.33 × 129.44
  4. Step 4: Simplify right side
    141.13x = 25,153.43
  5. Step 5: Solve for x
    x = 25,153.43/141.13
  6. Step 6: Final answer
    x = 178.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.