Home / 139,834,291.97-192,972,147.65-81,131,910.41

Finding the Fourth Proportional to 139,834,291.97, 192,972,147.65 and 81,131,910.41

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Solution

The fourth proportional to 139,834,291.97, 192,972,147.65 and 81,131,910.41 is: 111,962,514.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,834,291.97 : 192,972,147.65 = 81,131,910.41 : x
  2. Step 2: Convert to fraction form
    139,834,291.97/192,972,147.65 = 81,131,910.41/x
  3. Step 3: Cross multiply
    139,834,291.97x = 192,972,147.65 × 81,131,910.41
  4. Step 4: Simplify right side
    139,834,291.97x = 15,656,198,994,765,092
  5. Step 5: Solve for x
    x = 15,656,198,994,765,092/139,834,291.97
  6. Step 6: Final answer
    x = 111,962,514.88

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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.