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Finding the Fourth Proportional to 135,903.46, 187,481.37 and 88,171.78

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Solution

The fourth proportional to 135,903.46, 187,481.37 and 88,171.78 is: 121,634.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,903.46 : 187,481.37 = 88,171.78 : x
  2. Step 2: Convert to fraction form
    135,903.46/187,481.37 = 88,171.78/x
  3. Step 3: Cross multiply
    135,903.46x = 187,481.37 × 88,171.78
  4. Step 4: Simplify right side
    135,903.46x = 16,530,566,109.74
  5. Step 5: Solve for x
    x = 16,530,566,109.74/135,903.46
  6. Step 6: Final answer
    x = 121,634.62

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.