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Finding the Fourth Proportional to 128,049.20, 192,104.13 and 43,810.28

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Solution

The fourth proportional to 128,049.20, 192,104.13 and 43,810.28 is: 65,725.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,049.20 : 192,104.13 = 43,810.28 : x
  2. Step 2: Convert to fraction form
    128,049.20/192,104.13 = 43,810.28/x
  3. Step 3: Cross multiply
    128,049.20x = 192,104.13 × 43,810.28
  4. Step 4: Simplify right side
    128,049.20x = 8,416,135,724.46
  5. Step 5: Solve for x
    x = 8,416,135,724.46/128,049.20
  6. Step 6: Final answer
    x = 65,725.80

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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.