Home / 128,419,778.20-192,310,802.70-102,910,610.20

Finding the Fourth Proportional to 128,419,778.20, 192,310,802.70 and 102,910,610.20

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Solution

The fourth proportional to 128,419,778.20, 192,310,802.70 and 102,910,610.20 is: 154,110,389.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,419,778.20 : 192,310,802.70 = 102,910,610.20 : x
  2. Step 2: Convert to fraction form
    128,419,778.20/192,310,802.70 = 102,910,610.20/x
  3. Step 3: Cross multiply
    128,419,778.20x = 192,310,802.70 × 102,910,610.20
  4. Step 4: Simplify right side
    128,419,778.20x = 19,790,822,053,908,808
  5. Step 5: Solve for x
    x = 19,790,822,053,908,808/128,419,778.20
  6. Step 6: Final answer
    x = 154,110,389.62

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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.