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Finding the Fourth Proportional to 121,449.78, 182,200.59 and 42,568.74

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Solution

The fourth proportional to 121,449.78, 182,200.59 and 42,568.74 is: 63,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,449.78 : 182,200.59 = 42,568.74 : x
  2. Step 2: Convert to fraction form
    121,449.78/182,200.59 = 42,568.74/x
  3. Step 3: Cross multiply
    121,449.78x = 182,200.59 × 42,568.74
  4. Step 4: Simplify right side
    121,449.78x = 7,756,049,543.56
  5. Step 5: Solve for x
    x = 7,756,049,543.56/121,449.78
  6. Step 6: Final answer
    x = 63,862.20

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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.