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Finding the Fourth Proportional to 121,957.43, 182,936.14 and 80,394.71

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Solution

The fourth proportional to 121,957.43, 182,936.14 and 80,394.71 is: 120,592.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,957.43 : 182,936.14 = 80,394.71 : x
  2. Step 2: Convert to fraction form
    121,957.43/182,936.14 = 80,394.71/x
  3. Step 3: Cross multiply
    121,957.43x = 182,936.14 × 80,394.71
  4. Step 4: Simplify right side
    121,957.43x = 14,707,097,923.82
  5. Step 5: Solve for x
    x = 14,707,097,923.82/121,957.43
  6. Step 6: Final answer
    x = 120,592.06

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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.