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Finding the Fourth Proportional to 192,634.65, 288,865.58 and 87,399.45

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Solution

The fourth proportional to 192,634.65, 288,865.58 and 87,399.45 is: 131,059.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,634.65 : 288,865.58 = 87,399.45 : x
  2. Step 2: Convert to fraction form
    192,634.65/288,865.58 = 87,399.45/x
  3. Step 3: Cross multiply
    192,634.65x = 288,865.58 × 87,399.45
  4. Step 4: Simplify right side
    192,634.65x = 25,246,692,378.93
  5. Step 5: Solve for x
    x = 25,246,692,378.93/192,634.65
  6. Step 6: Final answer
    x = 131,059.97

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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.