Home / 139,008,951.11-207,285,266.80-137,761,268.78

Finding the Fourth Proportional to 139,008,951.11, 207,285,266.80 and 137,761,268.78

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Solution

The fourth proportional to 139,008,951.11, 207,285,266.80 and 137,761,268.78 is: 205,424,766.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,008,951.11 : 207,285,266.80 = 137,761,268.78 : x
  2. Step 2: Convert to fraction form
    139,008,951.11/207,285,266.80 = 137,761,268.78/x
  3. Step 3: Cross multiply
    139,008,951.11x = 207,285,266.80 × 137,761,268.78
  4. Step 4: Simplify right side
    139,008,951.11x = 28,555,881,353,768,812
  5. Step 5: Solve for x
    x = 28,555,881,353,768,812/139,008,951.11
  6. Step 6: Final answer
    x = 205,424,766.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.