Home / 261,198.84-391,796.64-126,105.30

Finding the Fourth Proportional to 261,198.84, 391,796.64 and 126,105.30

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Solution

The fourth proportional to 261,198.84, 391,796.64 and 126,105.30 is: 189,157.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,198.84 : 391,796.64 = 126,105.30 : x
  2. Step 2: Convert to fraction form
    261,198.84/391,796.64 = 126,105.30/x
  3. Step 3: Cross multiply
    261,198.84x = 391,796.64 × 126,105.30
  4. Step 4: Simplify right side
    261,198.84x = 49,407,632,826.19
  5. Step 5: Solve for x
    x = 49,407,632,826.19/261,198.84
  6. Step 6: Final answer
    x = 189,157.17

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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.