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Finding the Fourth Proportional to 103,672.28, 142,936.96 and 67,805.48

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Solution

The fourth proportional to 103,672.28, 142,936.96 and 67,805.48 is: 93,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,672.28 : 142,936.96 = 67,805.48 : x
  2. Step 2: Convert to fraction form
    103,672.28/142,936.96 = 67,805.48/x
  3. Step 3: Cross multiply
    103,672.28x = 142,936.96 × 67,805.48
  4. Step 4: Simplify right side
    103,672.28x = 9,691,909,182.54
  5. Step 5: Solve for x
    x = 9,691,909,182.54/103,672.28
  6. Step 6: Final answer
    x = 93,486.02

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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.