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Finding the Fourth Proportional to 193,388.60, 290,134.10 and 68,716.60

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Solution

The fourth proportional to 193,388.60, 290,134.10 and 68,716.60 is: 103,093.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,388.60 : 290,134.10 = 68,716.60 : x
  2. Step 2: Convert to fraction form
    193,388.60/290,134.10 = 68,716.60/x
  3. Step 3: Cross multiply
    193,388.60x = 290,134.10 × 68,716.60
  4. Step 4: Simplify right side
    193,388.60x = 19,937,028,896.06
  5. Step 5: Solve for x
    x = 19,937,028,896.06/193,388.60
  6. Step 6: Final answer
    x = 103,093.09

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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.