Home / 80,128.54-120,220.68-30,222.95

Finding the Fourth Proportional to 80,128.54, 120,220.68 and 30,222.95

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Solution

The fourth proportional to 80,128.54, 120,220.68 and 30,222.95 is: 45,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,128.54 : 120,220.68 = 30,222.95 : x
  2. Step 2: Convert to fraction form
    80,128.54/120,220.68 = 30,222.95/x
  3. Step 3: Cross multiply
    80,128.54x = 120,220.68 × 30,222.95
  4. Step 4: Simplify right side
    80,128.54x = 3,633,423,600.61
  5. Step 5: Solve for x
    x = 3,633,423,600.61/80,128.54
  6. Step 6: Final answer
    x = 45,344.94

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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.