Home / 127,944.20-192,089.10-81,288.20

Finding the Fourth Proportional to 127,944.20, 192,089.10 and 81,288.20

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Solution

The fourth proportional to 127,944.20, 192,089.10 and 81,288.20 is: 122,042.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,944.20 : 192,089.10 = 81,288.20 : x
  2. Step 2: Convert to fraction form
    127,944.20/192,089.10 = 81,288.20/x
  3. Step 3: Cross multiply
    127,944.20x = 192,089.10 × 81,288.20
  4. Step 4: Simplify right side
    127,944.20x = 15,614,577,178.62
  5. Step 5: Solve for x
    x = 15,614,577,178.62/127,944.20
  6. Step 6: Final answer
    x = 122,042.09

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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.