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Finding the Fourth Proportional to 103,663.77, 143,100.15 and 69,691.97

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Solution

The fourth proportional to 103,663.77, 143,100.15 and 69,691.97 is: 96,204.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,663.77 : 143,100.15 = 69,691.97 : x
  2. Step 2: Convert to fraction form
    103,663.77/143,100.15 = 69,691.97/x
  3. Step 3: Cross multiply
    103,663.77x = 143,100.15 × 69,691.97
  4. Step 4: Simplify right side
    103,663.77x = 9,972,930,296.83
  5. Step 5: Solve for x
    x = 9,972,930,296.83/103,663.77
  6. Step 6: Final answer
    x = 96,204.59

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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.