Home / 139,169,680.41-192,042,958.83-80,436,149.69

Finding the Fourth Proportional to 139,169,680.41, 192,042,958.83 and 80,436,149.69

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Solution

The fourth proportional to 139,169,680.41, 192,042,958.83 and 80,436,149.69 is: 110,995,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,169,680.41 : 192,042,958.83 = 80,436,149.69 : x
  2. Step 2: Convert to fraction form
    139,169,680.41/192,042,958.83 = 80,436,149.69/x
  3. Step 3: Cross multiply
    139,169,680.41x = 192,042,958.83 × 80,436,149.69
  4. Step 4: Simplify right side
    139,169,680.41x = 15,447,196,183,360,388
  5. Step 5: Solve for x
    x = 15,447,196,183,360,388/139,169,680.41
  6. Step 6: Final answer
    x = 110,995,413.21

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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.