Home / 128,418,002.30-192,627,003.45-73,998,443.90

Finding the Fourth Proportional to 128,418,002.30, 192,627,003.45 and 73,998,443.90

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Solution

The fourth proportional to 128,418,002.30, 192,627,003.45 and 73,998,443.90 is: 110,997,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,418,002.30 : 192,627,003.45 = 73,998,443.90 : x
  2. Step 2: Convert to fraction form
    128,418,002.30/192,627,003.45 = 73,998,443.90/x
  3. Step 3: Cross multiply
    128,418,002.30x = 192,627,003.45 × 73,998,443.90
  4. Step 4: Simplify right side
    128,418,002.30x = 14,254,098,508,419,932
  5. Step 5: Solve for x
    x = 14,254,098,508,419,932/128,418,002.30
  6. Step 6: Final answer
    x = 110,997,665.85

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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.