Home / 137,664,029.40-206,247,212.10-80,109,187.80

Finding the Fourth Proportional to 137,664,029.40, 206,247,212.10 and 80,109,187.80

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Solution

The fourth proportional to 137,664,029.40, 206,247,212.10 and 80,109,187.80 is: 120,018,981.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,664,029.40 : 206,247,212.10 = 80,109,187.80 : x
  2. Step 2: Convert to fraction form
    137,664,029.40/206,247,212.10 = 80,109,187.80/x
  3. Step 3: Cross multiply
    137,664,029.40x = 206,247,212.10 × 80,109,187.80
  4. Step 4: Simplify right side
    137,664,029.40x = 16,522,296,647,345,332
  5. Step 5: Solve for x
    x = 16,522,296,647,345,332/137,664,029.40
  6. Step 6: Final answer
    x = 120,018,981.86

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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.