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Finding the Fourth Proportional to 138,876.10, 207,986.10 and 94,261.30

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Solution

The fourth proportional to 138,876.10, 207,986.10 and 94,261.30 is: 141,169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,876.10 : 207,986.10 = 94,261.30 : x
  2. Step 2: Convert to fraction form
    138,876.10/207,986.10 = 94,261.30/x
  3. Step 3: Cross multiply
    138,876.10x = 207,986.10 × 94,261.30
  4. Step 4: Simplify right side
    138,876.10x = 19,605,040,167.93
  5. Step 5: Solve for x
    x = 19,605,040,167.93/138,876.10
  6. Step 6: Final answer
    x = 141,169.29

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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.