Home / 454,147.20-681,220.80-121,723.20

Finding the Fourth Proportional to 454,147.20, 681,220.80 and 121,723.20

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Solution

The fourth proportional to 454,147.20, 681,220.80 and 121,723.20 is: 182,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,147.20 : 681,220.80 = 121,723.20 : x
  2. Step 2: Convert to fraction form
    454,147.20/681,220.80 = 121,723.20/x
  3. Step 3: Cross multiply
    454,147.20x = 681,220.80 × 121,723.20
  4. Step 4: Simplify right side
    454,147.20x = 82,920,375,682.56
  5. Step 5: Solve for x
    x = 82,920,375,682.56/454,147.20
  6. Step 6: Final answer
    x = 182,584.80

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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.