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Finding the Fourth Proportional to 103,691.26, 143,094.15 and 58,979.26

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Solution

The fourth proportional to 103,691.26, 143,094.15 and 58,979.26 is: 81,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.26 : 143,094.15 = 58,979.26 : x
  2. Step 2: Convert to fraction form
    103,691.26/143,094.15 = 58,979.26/x
  3. Step 3: Cross multiply
    103,691.26x = 143,094.15 × 58,979.26
  4. Step 4: Simplify right side
    103,691.26x = 8,439,587,077.33
  5. Step 5: Solve for x
    x = 8,439,587,077.33/103,691.26
  6. Step 6: Final answer
    x = 81,391.50

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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.