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Finding the Fourth Proportional to 119,752,801.20, 179,629,201.80 and 81,489,049.20

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Solution

The fourth proportional to 119,752,801.20, 179,629,201.80 and 81,489,049.20 is: 122,233,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,752,801.20 : 179,629,201.80 = 81,489,049.20 : x
  2. Step 2: Convert to fraction form
    119,752,801.20/179,629,201.80 = 81,489,049.20/x
  3. Step 3: Cross multiply
    119,752,801.20x = 179,629,201.80 × 81,489,049.20
  4. Step 4: Simplify right side
    119,752,801.20x = 14,637,812,863,236,930
  5. Step 5: Solve for x
    x = 14,637,812,863,236,930/119,752,801.20
  6. Step 6: Final answer
    x = 122,233,573.80

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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.