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Finding the Fourth Proportional to 199,372.71, 275,133.52 and 108,728.45

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Solution

The fourth proportional to 199,372.71, 275,133.52 and 108,728.45 is: 150,044.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,372.71 : 275,133.52 = 108,728.45 : x
  2. Step 2: Convert to fraction form
    199,372.71/275,133.52 = 108,728.45/x
  3. Step 3: Cross multiply
    199,372.71x = 275,133.52 × 108,728.45
  4. Step 4: Simplify right side
    199,372.71x = 29,914,841,172.64
  5. Step 5: Solve for x
    x = 29,914,841,172.64/199,372.71
  6. Step 6: Final answer
    x = 150,044.81

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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.