Home / 87,281.90-130,922.85-80,866.70

Finding the Fourth Proportional to 87,281.90, 130,922.85 and 80,866.70

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Solution

The fourth proportional to 87,281.90, 130,922.85 and 80,866.70 is: 121,300.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.90 : 130,922.85 = 80,866.70 : x
  2. Step 2: Convert to fraction form
    87,281.90/130,922.85 = 80,866.70/x
  3. Step 3: Cross multiply
    87,281.90x = 130,922.85 × 80,866.70
  4. Step 4: Simplify right side
    87,281.90x = 10,587,298,834.10
  5. Step 5: Solve for x
    x = 10,587,298,834.10/87,281.90
  6. Step 6: Final answer
    x = 121,300.05

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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.