Home / 128,084.20-192,126.30-83,847.40

Finding the Fourth Proportional to 128,084.20, 192,126.30 and 83,847.40

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Solution

The fourth proportional to 128,084.20, 192,126.30 and 83,847.40 is: 125,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,084.20 : 192,126.30 = 83,847.40 : x
  2. Step 2: Convert to fraction form
    128,084.20/192,126.30 = 83,847.40/x
  3. Step 3: Cross multiply
    128,084.20x = 192,126.30 × 83,847.40
  4. Step 4: Simplify right side
    128,084.20x = 16,109,290,726.62
  5. Step 5: Solve for x
    x = 16,109,290,726.62/128,084.20
  6. Step 6: Final answer
    x = 125,771.10

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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.