Home / 138,398,102.70-207,455,436.45-80,860,757.10

Finding the Fourth Proportional to 138,398,102.70, 207,455,436.45 and 80,860,757.10

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Solution

The fourth proportional to 138,398,102.70, 207,455,436.45 and 80,860,757.10 is: 121,208,335.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,398,102.70 : 207,455,436.45 = 80,860,757.10 : x
  2. Step 2: Convert to fraction form
    138,398,102.70/207,455,436.45 = 80,860,757.10/x
  3. Step 3: Cross multiply
    138,398,102.70x = 207,455,436.45 × 80,860,757.10
  4. Step 4: Simplify right side
    138,398,102.70x = 16,775,003,655,857,934
  5. Step 5: Solve for x
    x = 16,775,003,655,857,934/138,398,102.70
  6. Step 6: Final answer
    x = 121,208,335.44

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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.