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Finding the Fourth Proportional to 141.59, 195.39 and 86.29

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Solution

The fourth proportional to 141.59, 195.39 and 86.29 is: 119.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.59 : 195.39 = 86.29 : x
  2. Step 2: Convert to fraction form
    141.59/195.39 = 86.29/x
  3. Step 3: Cross multiply
    141.59x = 195.39 × 86.29
  4. Step 4: Simplify right side
    141.59x = 16,860.20
  5. Step 5: Solve for x
    x = 16,860.20/141.59
  6. Step 6: Final answer
    x = 119.08

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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.