Home / 202,147,839.78-278,964,019.17-109,328,347.86

Finding the Fourth Proportional to 202,147,839.78, 278,964,019.17 and 109,328,347.86

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Solution

The fourth proportional to 202,147,839.78, 278,964,019.17 and 109,328,347.86 is: 150,873,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,147,839.78 : 278,964,019.17 = 109,328,347.86 : x
  2. Step 2: Convert to fraction form
    202,147,839.78/278,964,019.17 = 109,328,347.86/x
  3. Step 3: Cross multiply
    202,147,839.78x = 278,964,019.17 × 109,328,347.86
  4. Step 4: Simplify right side
    202,147,839.78x = 30,498,675,328,241,472
  5. Step 5: Solve for x
    x = 30,498,675,328,241,472/202,147,839.78
  6. Step 6: Final answer
    x = 150,873,120.19

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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.