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Finding the Fourth Proportional to 139,175.92, 192,063.20 and 75,514.24

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Solution

The fourth proportional to 139,175.92, 192,063.20 and 75,514.24 is: 104,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,175.92 : 192,063.20 = 75,514.24 : x
  2. Step 2: Convert to fraction form
    139,175.92/192,063.20 = 75,514.24/x
  3. Step 3: Cross multiply
    139,175.92x = 192,063.20 × 75,514.24
  4. Step 4: Simplify right side
    139,175.92x = 14,503,506,579.97
  5. Step 5: Solve for x
    x = 14,503,506,579.97/139,175.92
  6. Step 6: Final answer
    x = 104,209.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.