Home / 261,194.29-391,939.07-111,420.43

Finding the Fourth Proportional to 261,194.29, 391,939.07 and 111,420.43

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Solution

The fourth proportional to 261,194.29, 391,939.07 and 111,420.43 is: 167,193.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,194.29 : 391,939.07 = 111,420.43 : x
  2. Step 2: Convert to fraction form
    261,194.29/391,939.07 = 111,420.43/x
  3. Step 3: Cross multiply
    261,194.29x = 391,939.07 × 111,420.43
  4. Step 4: Simplify right side
    261,194.29x = 43,670,019,713.20
  5. Step 5: Solve for x
    x = 43,670,019,713.20/261,194.29
  6. Step 6: Final answer
    x = 167,193.62

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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.