Home / 103,447.20-155,167.65-28,571.88

Finding the Fourth Proportional to 103,447.20, 155,167.65 and 28,571.88

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Solution

The fourth proportional to 103,447.20, 155,167.65 and 28,571.88 is: 42,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,447.20 : 155,167.65 = 28,571.88 : x
  2. Step 2: Convert to fraction form
    103,447.20/155,167.65 = 28,571.88/x
  3. Step 3: Cross multiply
    103,447.20x = 155,167.65 × 28,571.88
  4. Step 4: Simplify right side
    103,447.20x = 4,433,431,475.68
  5. Step 5: Solve for x
    x = 4,433,431,475.68/103,447.20
  6. Step 6: Final answer
    x = 42,856.95

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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.