Home / 128,324,250.40-192,486,375.60-123,789,287.20

Finding the Fourth Proportional to 128,324,250.40, 192,486,375.60 and 123,789,287.20

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Solution

The fourth proportional to 128,324,250.40, 192,486,375.60 and 123,789,287.20 is: 185,683,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324,250.40 : 192,486,375.60 = 123,789,287.20 : x
  2. Step 2: Convert to fraction form
    128,324,250.40/192,486,375.60 = 123,789,287.20/x
  3. Step 3: Cross multiply
    128,324,250.40x = 192,486,375.60 × 123,789,287.20
  4. Step 4: Simplify right side
    128,324,250.40x = 23,827,751,231,235,472
  5. Step 5: Solve for x
    x = 23,827,751,231,235,472/128,324,250.40
  6. Step 6: Final answer
    x = 185,683,930.80

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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.