Home / 135,558.78-203,138.34-75,504.54

Finding the Fourth Proportional to 135,558.78, 203,138.34 and 75,504.54

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Solution

The fourth proportional to 135,558.78, 203,138.34 and 75,504.54 is: 113,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,558.78 : 203,138.34 = 75,504.54 : x
  2. Step 2: Convert to fraction form
    135,558.78/203,138.34 = 75,504.54/x
  3. Step 3: Cross multiply
    135,558.78x = 203,138.34 × 75,504.54
  4. Step 4: Simplify right side
    135,558.78x = 15,337,866,918.06
  5. Step 5: Solve for x
    x = 15,337,866,918.06/135,558.78
  6. Step 6: Final answer
    x = 113,145.51

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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.