Home / 143,836,660.70-198,482,589.51-81,109,243.34

Finding the Fourth Proportional to 143,836,660.70, 198,482,589.51 and 81,109,243.34

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Solution

The fourth proportional to 143,836,660.70, 198,482,589.51 and 81,109,243.34 is: 111,923,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,836,660.70 : 198,482,589.51 = 81,109,243.34 : x
  2. Step 2: Convert to fraction form
    143,836,660.70/198,482,589.51 = 81,109,243.34/x
  3. Step 3: Cross multiply
    143,836,660.70x = 198,482,589.51 × 81,109,243.34
  4. Step 4: Simplify right side
    143,836,660.70x = 16,098,772,651,319,922
  5. Step 5: Solve for x
    x = 16,098,772,651,319,922/143,836,660.70
  6. Step 6: Final answer
    x = 111,923,987.76

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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.