Home / 202,061.28-278,842.34-111,425.20

Finding the Fourth Proportional to 202,061.28, 278,842.34 and 111,425.20

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Solution

The fourth proportional to 202,061.28, 278,842.34 and 111,425.20 is: 153,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,061.28 : 278,842.34 = 111,425.20 : x
  2. Step 2: Convert to fraction form
    202,061.28/278,842.34 = 111,425.20/x
  3. Step 3: Cross multiply
    202,061.28x = 278,842.34 × 111,425.20
  4. Step 4: Simplify right side
    202,061.28x = 31,070,063,502.97
  5. Step 5: Solve for x
    x = 31,070,063,502.97/202,061.28
  6. Step 6: Final answer
    x = 153,765.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.