Home / 80,916,761,940.60-121,375,142,910.90-79,677,016,375.80

Finding the Fourth Proportional to 80,916,761,940.60, 121,375,142,910.90 and 79,677,016,375.80

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Solution

The fourth proportional to 80,916,761,940.60, 121,375,142,910.90 and 79,677,016,375.80 is: 119,515,524,563.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916,761,940.60 : 121,375,142,910.90 = 79,677,016,375.80 : x
  2. Step 2: Convert to fraction form
    80,916,761,940.60/121,375,142,910.90 = 79,677,016,375.80/x
  3. Step 3: Cross multiply
    80,916,761,940.60x = 121,375,142,910.90 × 79,677,016,375.80
  4. Step 4: Simplify right side
    80,916,761,940.60x = 9,670,809,249,326,844,346,368
  5. Step 5: Solve for x
    x = 9,670,809,249,326,844,346,368/80,916,761,940.60
  6. Step 6: Final answer
    x = 119,515,524,563.70

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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.