Home / 128,419,969.20-192,311,089.20-102,910,801.20

Finding the Fourth Proportional to 128,419,969.20, 192,311,089.20 and 102,910,801.20

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Solution

The fourth proportional to 128,419,969.20, 192,311,089.20 and 102,910,801.20 is: 154,110,676.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,419,969.20 : 192,311,089.20 = 102,910,801.20 : x
  2. Step 2: Convert to fraction form
    128,419,969.20/192,311,089.20 = 102,910,801.20/x
  3. Step 3: Cross multiply
    128,419,969.20x = 192,311,089.20 × 102,910,801.20
  4. Step 4: Simplify right side
    128,419,969.20x = 19,790,888,269,216,668
  5. Step 5: Solve for x
    x = 19,790,888,269,216,668/128,419,969.20
  6. Step 6: Final answer
    x = 154,110,676.03

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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.