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Finding the Fourth Proportional to 192,519.68, 288,668.68 and 74,175.72

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Solution

The fourth proportional to 192,519.68, 288,668.68 and 74,175.72 is: 111,220.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,519.68 : 288,668.68 = 74,175.72 : x
  2. Step 2: Convert to fraction form
    192,519.68/288,668.68 = 74,175.72/x
  3. Step 3: Cross multiply
    192,519.68x = 288,668.68 × 74,175.72
  4. Step 4: Simplify right side
    192,519.68x = 21,412,207,180.45
  5. Step 5: Solve for x
    x = 21,412,207,180.45/192,519.68
  6. Step 6: Final answer
    x = 111,220.87

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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.