Home / 138,303,612.20-207,313,700.70-80,766,266.60

Finding the Fourth Proportional to 138,303,612.20, 207,313,700.70 and 80,766,266.60

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Solution

The fourth proportional to 138,303,612.20, 207,313,700.70 and 80,766,266.60 is: 121,066,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,303,612.20 : 207,313,700.70 = 80,766,266.60 : x
  2. Step 2: Convert to fraction form
    138,303,612.20/207,313,700.70 = 80,766,266.60/x
  3. Step 3: Cross multiply
    138,303,612.20x = 207,313,700.70 × 80,766,266.60
  4. Step 4: Simplify right side
    138,303,612.20x = 16,743,953,620,568,804
  5. Step 5: Solve for x
    x = 16,743,953,620,568,804/138,303,612.20
  6. Step 6: Final answer
    x = 121,066,639.94

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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.