Home / 135,712.20-203,471.10-56,785.80

Finding the Fourth Proportional to 135,712.20, 203,471.10 and 56,785.80

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Solution

The fourth proportional to 135,712.20, 203,471.10 and 56,785.80 is: 85,138.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,712.20 : 203,471.10 = 56,785.80 : x
  2. Step 2: Convert to fraction form
    135,712.20/203,471.10 = 56,785.80/x
  3. Step 3: Cross multiply
    135,712.20x = 203,471.10 × 56,785.80
  4. Step 4: Simplify right side
    135,712.20x = 11,554,269,190.38
  5. Step 5: Solve for x
    x = 11,554,269,190.38/135,712.20
  6. Step 6: Final answer
    x = 85,138.03

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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.