Home / 106,429,780.80-159,644,671.20-80,920,612.80

Finding the Fourth Proportional to 106,429,780.80, 159,644,671.20 and 80,920,612.80

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Solution

The fourth proportional to 106,429,780.80, 159,644,671.20 and 80,920,612.80 is: 121,380,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,429,780.80 : 159,644,671.20 = 80,920,612.80 : x
  2. Step 2: Convert to fraction form
    106,429,780.80/159,644,671.20 = 80,920,612.80/x
  3. Step 3: Cross multiply
    106,429,780.80x = 159,644,671.20 × 80,920,612.80
  4. Step 4: Simplify right side
    106,429,780.80x = 12,918,544,623,758,510
  5. Step 5: Solve for x
    x = 12,918,544,623,758,510/106,429,780.80
  6. Step 6: Final answer
    x = 121,380,919.20

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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.