Home / 128,424.20-192,377.10-89,025.80

Finding the Fourth Proportional to 128,424.20, 192,377.10 and 89,025.80

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Solution

The fourth proportional to 128,424.20, 192,377.10 and 89,025.80 is: 133,359.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,424.20 : 192,377.10 = 89,025.80 : x
  2. Step 2: Convert to fraction form
    128,424.20/192,377.10 = 89,025.80/x
  3. Step 3: Cross multiply
    128,424.20x = 192,377.10 × 89,025.80
  4. Step 4: Simplify right side
    128,424.20x = 17,126,525,229.18
  5. Step 5: Solve for x
    x = 17,126,525,229.18/128,424.20
  6. Step 6: Final answer
    x = 133,359.02

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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.