Home / 128,470.10-192,705.15-126,501.80

Finding the Fourth Proportional to 128,470.10, 192,705.15 and 126,501.80

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Solution

The fourth proportional to 128,470.10, 192,705.15 and 126,501.80 is: 189,752.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,470.10 : 192,705.15 = 126,501.80 : x
  2. Step 2: Convert to fraction form
    128,470.10/192,705.15 = 126,501.80/x
  3. Step 3: Cross multiply
    128,470.10x = 192,705.15 × 126,501.80
  4. Step 4: Simplify right side
    128,470.10x = 24,377,548,344.27
  5. Step 5: Solve for x
    x = 24,377,548,344.27/128,470.10
  6. Step 6: Final answer
    x = 189,752.70

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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.