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Finding the Fourth Proportional to 118,969.62, 164,121.48 and 71,213.79

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Solution

The fourth proportional to 118,969.62, 164,121.48 and 71,213.79 is: 98,241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,969.62 : 164,121.48 = 71,213.79 : x
  2. Step 2: Convert to fraction form
    118,969.62/164,121.48 = 71,213.79/x
  3. Step 3: Cross multiply
    118,969.62x = 164,121.48 × 71,213.79
  4. Step 4: Simplify right side
    118,969.62x = 11,687,712,611.21
  5. Step 5: Solve for x
    x = 11,687,712,611.21/118,969.62
  6. Step 6: Final answer
    x = 98,241.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.