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Finding the Fourth Proportional to 135,405.60, 203,108.40 and 133,072.80

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Solution

The fourth proportional to 135,405.60, 203,108.40 and 133,072.80 is: 199,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,405.60 : 203,108.40 = 133,072.80 : x
  2. Step 2: Convert to fraction form
    135,405.60/203,108.40 = 133,072.80/x
  3. Step 3: Cross multiply
    135,405.60x = 203,108.40 × 133,072.80
  4. Step 4: Simplify right side
    135,405.60x = 27,028,203,491.52
  5. Step 5: Solve for x
    x = 27,028,203,491.52/135,405.60
  6. Step 6: Final answer
    x = 199,609.20

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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.