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Finding the Fourth Proportional to 150,556.87, 225,855.96 and 87,406.64

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Solution

The fourth proportional to 150,556.87, 225,855.96 and 87,406.64 is: 131,121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,556.87 : 225,855.96 = 87,406.64 : x
  2. Step 2: Convert to fraction form
    150,556.87/225,855.96 = 87,406.64/x
  3. Step 3: Cross multiply
    150,556.87x = 225,855.96 × 87,406.64
  4. Step 4: Simplify right side
    150,556.87x = 19,741,309,239.78
  5. Step 5: Solve for x
    x = 19,741,309,239.78/150,556.87
  6. Step 6: Final answer
    x = 131,121.94

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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.