Home / 193,818.24-290,839.68-81,489.60

Finding the Fourth Proportional to 193,818.24, 290,839.68 and 81,489.60

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Solution

The fourth proportional to 193,818.24, 290,839.68 and 81,489.60 is: 122,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,818.24 : 290,839.68 = 81,489.60 : x
  2. Step 2: Convert to fraction form
    193,818.24/290,839.68 = 81,489.60/x
  3. Step 3: Cross multiply
    193,818.24x = 290,839.68 × 81,489.60
  4. Step 4: Simplify right side
    193,818.24x = 23,700,409,187.33
  5. Step 5: Solve for x
    x = 23,700,409,187.33/193,818.24
  6. Step 6: Final answer
    x = 122,281.62

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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.