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Finding the Fourth Proportional to 190,294.60, 285,481.97 and 71,963.32

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Solution

The fourth proportional to 190,294.60, 285,481.97 and 71,963.32 is: 107,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,294.60 : 285,481.97 = 71,963.32 : x
  2. Step 2: Convert to fraction form
    190,294.60/285,481.97 = 71,963.32/x
  3. Step 3: Cross multiply
    190,294.60x = 285,481.97 × 71,963.32
  4. Step 4: Simplify right side
    190,294.60x = 20,544,230,361.34
  5. Step 5: Solve for x
    x = 20,544,230,361.34/190,294.60
  6. Step 6: Final answer
    x = 107,960.13

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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.