Home / 139,743,520.66-192,846,823.28-81,040,990.42

Finding the Fourth Proportional to 139,743,520.66, 192,846,823.28 and 81,040,990.42

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Solution

The fourth proportional to 139,743,520.66, 192,846,823.28 and 81,040,990.42 is: 111,837,010.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743,520.66 : 192,846,823.28 = 81,040,990.42 : x
  2. Step 2: Convert to fraction form
    139,743,520.66/192,846,823.28 = 81,040,990.42/x
  3. Step 3: Cross multiply
    139,743,520.66x = 192,846,823.28 × 81,040,990.42
  4. Step 4: Simplify right side
    139,743,520.66x = 15,628,497,557,961,914
  5. Step 5: Solve for x
    x = 15,628,497,557,961,914/139,743,520.66
  6. Step 6: Final answer
    x = 111,837,010.29

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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.