Home / 106,428,948.80-159,643,423.20-80,919,780.80

Finding the Fourth Proportional to 106,428,948.80, 159,643,423.20 and 80,919,780.80

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Solution

The fourth proportional to 106,428,948.80, 159,643,423.20 and 80,919,780.80 is: 121,379,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,428,948.80 : 159,643,423.20 = 80,919,780.80 : x
  2. Step 2: Convert to fraction form
    106,428,948.80/159,643,423.20 = 80,919,780.80/x
  3. Step 3: Cross multiply
    106,428,948.80x = 159,643,423.20 × 80,919,780.80
  4. Step 4: Simplify right side
    106,428,948.80x = 12,918,310,811,505,634
  5. Step 5: Solve for x
    x = 12,918,310,811,505,634/106,428,948.80
  6. Step 6: Final answer
    x = 121,379,671.20

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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.