Home / 128,419,961.70-192,311,077.95-102,910,793.70

Finding the Fourth Proportional to 128,419,961.70, 192,311,077.95 and 102,910,793.70

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Solution

The fourth proportional to 128,419,961.70, 192,311,077.95 and 102,910,793.70 is: 154,110,664.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,419,961.70 : 192,311,077.95 = 102,910,793.70 : x
  2. Step 2: Convert to fraction form
    128,419,961.70/192,311,077.95 = 102,910,793.70/x
  3. Step 3: Cross multiply
    128,419,961.70x = 192,311,077.95 × 102,910,793.70
  4. Step 4: Simplify right side
    128,419,961.70x = 19,790,885,669,137,068
  5. Step 5: Solve for x
    x = 19,790,885,669,137,068/128,419,961.70
  6. Step 6: Final answer
    x = 154,110,664.78

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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.