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Finding the Fourth Proportional to 143,502.90, 215,254.38 and 43,654.20

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Solution

The fourth proportional to 143,502.90, 215,254.38 and 43,654.20 is: 65,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,502.90 : 215,254.38 = 43,654.20 : x
  2. Step 2: Convert to fraction form
    143,502.90/215,254.38 = 43,654.20/x
  3. Step 3: Cross multiply
    143,502.90x = 215,254.38 × 43,654.20
  4. Step 4: Simplify right side
    143,502.90x = 9,396,757,755.40
  5. Step 5: Solve for x
    x = 9,396,757,755.40/143,502.90
  6. Step 6: Final answer
    x = 65,481.31

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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.