Home / 126,917.28-190,380.78-38,183.40

Finding the Fourth Proportional to 126,917.28, 190,380.78 and 38,183.40

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Solution

The fourth proportional to 126,917.28, 190,380.78 and 38,183.40 is: 57,276.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,917.28 : 190,380.78 = 38,183.40 : x
  2. Step 2: Convert to fraction form
    126,917.28/190,380.78 = 38,183.40/x
  3. Step 3: Cross multiply
    126,917.28x = 190,380.78 × 38,183.40
  4. Step 4: Simplify right side
    126,917.28x = 7,269,385,475.05
  5. Step 5: Solve for x
    x = 7,269,385,475.05/126,917.28
  6. Step 6: Final answer
    x = 57,276.56

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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.