Home / 135,891.20-203,836.80-102,713.60

Finding the Fourth Proportional to 135,891.20, 203,836.80 and 102,713.60

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Solution

The fourth proportional to 135,891.20, 203,836.80 and 102,713.60 is: 154,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,891.20 : 203,836.80 = 102,713.60 : x
  2. Step 2: Convert to fraction form
    135,891.20/203,836.80 = 102,713.60/x
  3. Step 3: Cross multiply
    135,891.20x = 203,836.80 × 102,713.60
  4. Step 4: Simplify right side
    135,891.20x = 20,936,811,540.48
  5. Step 5: Solve for x
    x = 20,936,811,540.48/135,891.20
  6. Step 6: Final answer
    x = 154,070.40

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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.