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Finding the Fourth Proportional to 192,539.97, 288,951.86 and 91,338.35

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Solution

The fourth proportional to 192,539.97, 288,951.86 and 91,338.35 is: 137,074.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,539.97 : 288,951.86 = 91,338.35 : x
  2. Step 2: Convert to fraction form
    192,539.97/288,951.86 = 91,338.35/x
  3. Step 3: Cross multiply
    192,539.97x = 288,951.86 × 91,338.35
  4. Step 4: Simplify right side
    192,539.97x = 26,392,384,220.38
  5. Step 5: Solve for x
    x = 26,392,384,220.38/192,539.97
  6. Step 6: Final answer
    x = 137,074.83

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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.