Home / 138,023,998.80-206,957,266.20-51,765,219.60

Finding the Fourth Proportional to 138,023,998.80, 206,957,266.20 and 51,765,219.60

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Solution

The fourth proportional to 138,023,998.80, 206,957,266.20 and 51,765,219.60 is: 77,618,301.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023,998.80 : 206,957,266.20 = 51,765,219.60 : x
  2. Step 2: Convert to fraction form
    138,023,998.80/206,957,266.20 = 51,765,219.60/x
  3. Step 3: Cross multiply
    138,023,998.80x = 206,957,266.20 × 51,765,219.60
  4. Step 4: Simplify right side
    138,023,998.80x = 10,713,188,332,658,658
  5. Step 5: Solve for x
    x = 10,713,188,332,658,658/138,023,998.80
  6. Step 6: Final answer
    x = 77,618,301.35

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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.