Home / 80,650.10-120,975.15-51,101.30

Finding the Fourth Proportional to 80,650.10, 120,975.15 and 51,101.30

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Solution

The fourth proportional to 80,650.10, 120,975.15 and 51,101.30 is: 76,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,650.10 : 120,975.15 = 51,101.30 : x
  2. Step 2: Convert to fraction form
    80,650.10/120,975.15 = 51,101.30/x
  3. Step 3: Cross multiply
    80,650.10x = 120,975.15 × 51,101.30
  4. Step 4: Simplify right side
    80,650.10x = 6,181,987,432.70
  5. Step 5: Solve for x
    x = 6,181,987,432.70/80,650.10
  6. Step 6: Final answer
    x = 76,651.95

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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.