Home / 193,481.18-290,333.82-81,151.40

Finding the Fourth Proportional to 193,481.18, 290,333.82 and 81,151.40

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Solution

The fourth proportional to 193,481.18, 290,333.82 and 81,151.40 is: 121,774.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,481.18 : 290,333.82 = 81,151.40 : x
  2. Step 2: Convert to fraction form
    193,481.18/290,333.82 = 81,151.40/x
  3. Step 3: Cross multiply
    193,481.18x = 290,333.82 × 81,151.40
  4. Step 4: Simplify right side
    193,481.18x = 23,560,995,960.35
  5. Step 5: Solve for x
    x = 23,560,995,960.35/193,481.18
  6. Step 6: Final answer
    x = 121,774.10

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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.