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Finding the Fourth Proportional to 454,561.71, 681,842.21 and 122,137.71

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Solution

The fourth proportional to 454,561.71, 681,842.21 and 122,137.71 is: 183,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,561.71 : 681,842.21 = 122,137.71 : x
  2. Step 2: Convert to fraction form
    454,561.71/681,842.21 = 122,137.71/x
  3. Step 3: Cross multiply
    454,561.71x = 681,842.21 × 122,137.71
  4. Step 4: Simplify right side
    454,561.71x = 83,278,645,500.05
  5. Step 5: Solve for x
    x = 83,278,645,500.05/454,561.71
  6. Step 6: Final answer
    x = 183,206.47

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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.