Home / 135,351.35-202,912.87-85,321.20

Finding the Fourth Proportional to 135,351.35, 202,912.87 and 85,321.20

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Solution

The fourth proportional to 135,351.35, 202,912.87 and 85,321.20 is: 127,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,351.35 : 202,912.87 = 85,321.20 : x
  2. Step 2: Convert to fraction form
    135,351.35/202,912.87 = 85,321.20/x
  3. Step 3: Cross multiply
    135,351.35x = 202,912.87 × 85,321.20
  4. Step 4: Simplify right side
    135,351.35x = 17,312,768,335.98
  5. Step 5: Solve for x
    x = 17,312,768,335.98/135,351.35
  6. Step 6: Final answer
    x = 127,909.83

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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.