Home / 90,131,512.51-135,178,351.45-25,420,183.95

Finding the Fourth Proportional to 90,131,512.51, 135,178,351.45 and 25,420,183.95

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Solution

The fourth proportional to 90,131,512.51, 135,178,351.45 and 25,420,183.95 is: 38,124,940.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131,512.51 : 135,178,351.45 = 25,420,183.95 : x
  2. Step 2: Convert to fraction form
    90,131,512.51/135,178,351.45 = 25,420,183.95/x
  3. Step 3: Cross multiply
    90,131,512.51x = 135,178,351.45 × 25,420,183.95
  4. Step 4: Simplify right side
    90,131,512.51x = 3,436,258,559,853,198.50
  5. Step 5: Solve for x
    x = 3,436,258,559,853,198.50/90,131,512.51
  6. Step 6: Final answer
    x = 38,124,940.59

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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.