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Finding the Fourth Proportional to 135,906.70, 203,860.05 and 130,147.60

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Solution

The fourth proportional to 135,906.70, 203,860.05 and 130,147.60 is: 195,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,906.70 : 203,860.05 = 130,147.60 : x
  2. Step 2: Convert to fraction form
    135,906.70/203,860.05 = 130,147.60/x
  3. Step 3: Cross multiply
    135,906.70x = 203,860.05 × 130,147.60
  4. Step 4: Simplify right side
    135,906.70x = 26,531,896,243.38
  5. Step 5: Solve for x
    x = 26,531,896,243.38/135,906.70
  6. Step 6: Final answer
    x = 195,221.40

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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.