Home / 99,697,839.60-149,285,680.20-80,163,231.60

Finding the Fourth Proportional to 99,697,839.60, 149,285,680.20 and 80,163,231.60

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Solution

The fourth proportional to 99,697,839.60, 149,285,680.20 and 80,163,231.60 is: 120,034,923.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,697,839.60 : 149,285,680.20 = 80,163,231.60 : x
  2. Step 2: Convert to fraction form
    99,697,839.60/149,285,680.20 = 80,163,231.60/x
  3. Step 3: Cross multiply
    99,697,839.60x = 149,285,680.20 × 80,163,231.60
  4. Step 4: Simplify right side
    99,697,839.60x = 11,967,222,556,436,132
  5. Step 5: Solve for x
    x = 11,967,222,556,436,132/99,697,839.60
  6. Step 6: Final answer
    x = 120,034,923.57

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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.