Home / 80,217.90-120,324.30-38,128.26

Finding the Fourth Proportional to 80,217.90, 120,324.30 and 38,128.26

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Solution

The fourth proportional to 80,217.90, 120,324.30 and 38,128.26 is: 57,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,217.90 : 120,324.30 = 38,128.26 : x
  2. Step 2: Convert to fraction form
    80,217.90/120,324.30 = 38,128.26/x
  3. Step 3: Cross multiply
    80,217.90x = 120,324.30 × 38,128.26
  4. Step 4: Simplify right side
    80,217.90x = 4,587,756,194.72
  5. Step 5: Solve for x
    x = 4,587,756,194.72/80,217.90
  6. Step 6: Final answer
    x = 57,191.18

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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.