Home / 139,145,540.80-208,743,969.78-45,777,766.64

Finding the Fourth Proportional to 139,145,540.80, 208,743,969.78 and 45,777,766.64

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Solution

The fourth proportional to 139,145,540.80, 208,743,969.78 and 45,777,766.64 is: 68,675,091.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,145,540.80 : 208,743,969.78 = 45,777,766.64 : x
  2. Step 2: Convert to fraction form
    139,145,540.80/208,743,969.78 = 45,777,766.64/x
  3. Step 3: Cross multiply
    139,145,540.80x = 208,743,969.78 × 45,777,766.64
  4. Step 4: Simplify right side
    139,145,540.80x = 9,555,832,736,096,052
  5. Step 5: Solve for x
    x = 9,555,832,736,096,052/139,145,540.80
  6. Step 6: Final answer
    x = 68,675,091.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.