Home / 135,836.80-203,755.20-85,317.10

Finding the Fourth Proportional to 135,836.80, 203,755.20 and 85,317.10

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Solution

The fourth proportional to 135,836.80, 203,755.20 and 85,317.10 is: 127,975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,836.80 : 203,755.20 = 85,317.10 : x
  2. Step 2: Convert to fraction form
    135,836.80/203,755.20 = 85,317.10/x
  3. Step 3: Cross multiply
    135,836.80x = 203,755.20 × 85,317.10
  4. Step 4: Simplify right side
    135,836.80x = 17,383,802,773.92
  5. Step 5: Solve for x
    x = 17,383,802,773.92/135,836.80
  6. Step 6: Final answer
    x = 127,975.65

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1.5x scale

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.