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Finding the Fourth Proportional to 141,542.56, 211,985.72 and 85,259.71

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Solution

The fourth proportional to 141,542.56, 211,985.72 and 85,259.71 is: 127,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,542.56 : 211,985.72 = 85,259.71 : x
  2. Step 2: Convert to fraction form
    141,542.56/211,985.72 = 85,259.71/x
  3. Step 3: Cross multiply
    141,542.56x = 211,985.72 × 85,259.71
  4. Step 4: Simplify right side
    141,542.56x = 18,073,841,011.34
  5. Step 5: Solve for x
    x = 18,073,841,011.34/141,542.56
  6. Step 6: Final answer
    x = 127,691.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.