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Finding the Fourth Proportional to 135,652.89, 187,191.84 and 75,221.31

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Solution

The fourth proportional to 135,652.89, 187,191.84 and 75,221.31 is: 103,800.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,652.89 : 187,191.84 = 75,221.31 : x
  2. Step 2: Convert to fraction form
    135,652.89/187,191.84 = 75,221.31/x
  3. Step 3: Cross multiply
    135,652.89x = 187,191.84 × 75,221.31
  4. Step 4: Simplify right side
    135,652.89x = 14,080,815,426.11
  5. Step 5: Solve for x
    x = 14,080,815,426.11/135,652.89
  6. Step 6: Final answer
    x = 103,800.34

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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.