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Finding the Fourth Proportional to 342,137.44, 513,234.87 and 126,055

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Solution

The fourth proportional to 342,137.44, 513,234.87 and 126,055 is: 189,093.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,137.44 : 513,234.87 = 126,055 : x
  2. Step 2: Convert to fraction form
    342,137.44/513,234.87 = 126,055/x
  3. Step 3: Cross multiply
    342,137.44x = 513,234.87 × 126,055
  4. Step 4: Simplify right side
    342,137.44x = 64,695,821,537.85
  5. Step 5: Solve for x
    x = 64,695,821,537.85/342,137.44
  6. Step 6: Final answer
    x = 189,093.08

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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.