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Finding the Fourth Proportional to 135,871.88, 203,714.78 and 69,182.92

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Solution

The fourth proportional to 135,871.88, 203,714.78 and 69,182.92 is: 103,727.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,871.88 : 203,714.78 = 69,182.92 : x
  2. Step 2: Convert to fraction form
    135,871.88/203,714.78 = 69,182.92/x
  3. Step 3: Cross multiply
    135,871.88x = 203,714.78 × 69,182.92
  4. Step 4: Simplify right side
    135,871.88x = 14,093,583,327.56
  5. Step 5: Solve for x
    x = 14,093,583,327.56/135,871.88
  6. Step 6: Final answer
    x = 103,727.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.