Home / 120,163,481.20-180,245,221.80-79,773,965.20

Finding the Fourth Proportional to 120,163,481.20, 180,245,221.80 and 79,773,965.20

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Solution

The fourth proportional to 120,163,481.20, 180,245,221.80 and 79,773,965.20 is: 119,660,947.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163,481.20 : 180,245,221.80 = 79,773,965.20 : x
  2. Step 2: Convert to fraction form
    120,163,481.20/180,245,221.80 = 79,773,965.20/x
  3. Step 3: Cross multiply
    120,163,481.20x = 180,245,221.80 × 79,773,965.20
  4. Step 4: Simplify right side
    120,163,481.20x = 14,378,876,051,339,482
  5. Step 5: Solve for x
    x = 14,378,876,051,339,482/120,163,481.20
  6. Step 6: Final answer
    x = 119,660,947.80

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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.