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Finding the Fourth Proportional to 121,957.54, 182,936.30 and 80,394.82

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Solution

The fourth proportional to 121,957.54, 182,936.30 and 80,394.82 is: 120,592.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,957.54 : 182,936.30 = 80,394.82 : x
  2. Step 2: Convert to fraction form
    121,957.54/182,936.30 = 80,394.82/x
  3. Step 3: Cross multiply
    121,957.54x = 182,936.30 × 80,394.82
  4. Step 4: Simplify right side
    121,957.54x = 14,707,130,909.97
  5. Step 5: Solve for x
    x = 14,707,130,909.97/121,957.54
  6. Step 6: Final answer
    x = 120,592.22

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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.