Home / 199,456.41-299,240.91-81,212.61

Finding the Fourth Proportional to 199,456.41, 299,240.91 and 81,212.61

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Solution

The fourth proportional to 199,456.41, 299,240.91 and 81,212.61 is: 121,841.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,456.41 : 299,240.91 = 81,212.61 : x
  2. Step 2: Convert to fraction form
    199,456.41/299,240.91 = 81,212.61/x
  3. Step 3: Cross multiply
    199,456.41x = 299,240.91 × 81,212.61
  4. Step 4: Simplify right side
    199,456.41x = 24,302,135,319.88
  5. Step 5: Solve for x
    x = 24,302,135,319.88/199,456.41
  6. Step 6: Final answer
    x = 121,841.84

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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.