Home / 265,780.20-398,661.66-107,961.96

Finding the Fourth Proportional to 265,780.20, 398,661.66 and 107,961.96

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Solution

The fourth proportional to 265,780.20, 398,661.66 and 107,961.96 is: 161,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,780.20 : 398,661.66 = 107,961.96 : x
  2. Step 2: Convert to fraction form
    265,780.20/398,661.66 = 107,961.96/x
  3. Step 3: Cross multiply
    265,780.20x = 398,661.66 × 107,961.96
  4. Step 4: Simplify right side
    265,780.20x = 43,040,294,190.45
  5. Step 5: Solve for x
    x = 43,040,294,190.45/265,780.20
  6. Step 6: Final answer
    x = 161,939.43

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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.