Home / 193,657.92-290,343.68-81,371.36

Finding the Fourth Proportional to 193,657.92, 290,343.68 and 81,371.36

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Solution

The fourth proportional to 193,657.92, 290,343.68 and 81,371.36 is: 121,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,657.92 : 290,343.68 = 81,371.36 : x
  2. Step 2: Convert to fraction form
    193,657.92/290,343.68 = 81,371.36/x
  3. Step 3: Cross multiply
    193,657.92x = 290,343.68 × 81,371.36
  4. Step 4: Simplify right side
    193,657.92x = 23,625,660,109.00
  5. Step 5: Solve for x
    x = 23,625,660,109.00/193,657.92
  6. Step 6: Final answer
    x = 121,996.87

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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.