Home / 135,861,843.40-203,494,166.70-81,915,065.80

Finding the Fourth Proportional to 135,861,843.40, 203,494,166.70 and 81,915,065.80

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Solution

The fourth proportional to 135,861,843.40, 203,494,166.70 and 81,915,065.80 is: 122,692,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,861,843.40 : 203,494,166.70 = 81,915,065.80 : x
  2. Step 2: Convert to fraction form
    135,861,843.40/203,494,166.70 = 81,915,065.80/x
  3. Step 3: Cross multiply
    135,861,843.40x = 203,494,166.70 × 81,915,065.80
  4. Step 4: Simplify right side
    135,861,843.40x = 16,669,238,055,146,668
  5. Step 5: Solve for x
    x = 16,669,238,055,146,668/135,861,843.40
  6. Step 6: Final answer
    x = 122,692,565.02

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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.