Home / 87,208.90-130,813.35-80,793.70

Finding the Fourth Proportional to 87,208.90, 130,813.35 and 80,793.70

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Solution

The fourth proportional to 87,208.90, 130,813.35 and 80,793.70 is: 121,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,208.90 : 130,813.35 = 80,793.70 : x
  2. Step 2: Convert to fraction form
    87,208.90/130,813.35 = 80,793.70/x
  3. Step 3: Cross multiply
    87,208.90x = 130,813.35 × 80,793.70
  4. Step 4: Simplify right side
    87,208.90x = 10,568,894,555.90
  5. Step 5: Solve for x
    x = 10,568,894,555.90/87,208.90
  6. Step 6: Final answer
    x = 121,190.55

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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.