Home / 143,586,904,390.45-198,149,446,994.19-78,481,293,974.21

Finding the Fourth Proportional to 143,586,904,390.45, 198,149,446,994.19 and 78,481,293,974.21

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Solution

The fourth proportional to 143,586,904,390.45, 198,149,446,994.19 and 78,481,293,974.21 is: 108,303,922,745.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,586,904,390.45 : 198,149,446,994.19 = 78,481,293,974.21 : x
  2. Step 2: Convert to fraction form
    143,586,904,390.45/198,149,446,994.19 = 78,481,293,974.21/x
  3. Step 3: Cross multiply
    143,586,904,390.45x = 198,149,446,994.19 × 78,481,293,974.21
  4. Step 4: Simplify right side
    143,586,904,390.45x = 15,551,025,000,378,565,394,432
  5. Step 5: Solve for x
    x = 15,551,025,000,378,565,394,432/143,586,904,390.45
  6. Step 6: Final answer
    x = 108,303,922,745.57

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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.