Home / 127,836.20-191,535.60-81,034.40

Finding the Fourth Proportional to 127,836.20, 191,535.60 and 81,034.40

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Solution

The fourth proportional to 127,836.20, 191,535.60 and 81,034.40 is: 121,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,836.20 : 191,535.60 = 81,034.40 : x
  2. Step 2: Convert to fraction form
    127,836.20/191,535.60 = 81,034.40/x
  3. Step 3: Cross multiply
    127,836.20x = 191,535.60 × 81,034.40
  4. Step 4: Simplify right side
    127,836.20x = 15,520,972,424.64
  5. Step 5: Solve for x
    x = 15,520,972,424.64/127,836.20
  6. Step 6: Final answer
    x = 121,412.97

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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.