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Finding the Fourth Proportional to 141.49, 195.01 and 129.88

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Solution

The fourth proportional to 141.49, 195.01 and 129.88 is: 179.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.49 : 195.01 = 129.88 : x
  2. Step 2: Convert to fraction form
    141.49/195.01 = 129.88/x
  3. Step 3: Cross multiply
    141.49x = 195.01 × 129.88
  4. Step 4: Simplify right side
    141.49x = 25,327.90
  5. Step 5: Solve for x
    x = 25,327.90/141.49
  6. Step 6: Final answer
    x = 179.01

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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.