Home / 135,945.20-203,917.80-100,515.80

Finding the Fourth Proportional to 135,945.20, 203,917.80 and 100,515.80

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Solution

The fourth proportional to 135,945.20, 203,917.80 and 100,515.80 is: 150,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,945.20 : 203,917.80 = 100,515.80 : x
  2. Step 2: Convert to fraction form
    135,945.20/203,917.80 = 100,515.80/x
  3. Step 3: Cross multiply
    135,945.20x = 203,917.80 × 100,515.80
  4. Step 4: Simplify right side
    135,945.20x = 20,496,960,801.24
  5. Step 5: Solve for x
    x = 20,496,960,801.24/135,945.20
  6. Step 6: Final answer
    x = 150,773.70

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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.