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Finding the Fourth Proportional to 205,912.16, 309,067.99 and 99,371.10

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Solution

The fourth proportional to 205,912.16, 309,067.99 and 99,371.10 is: 149,153.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,912.16 : 309,067.99 = 99,371.10 : x
  2. Step 2: Convert to fraction form
    205,912.16/309,067.99 = 99,371.10/x
  3. Step 3: Cross multiply
    205,912.16x = 309,067.99 × 99,371.10
  4. Step 4: Simplify right side
    205,912.16x = 30,712,425,892.66
  5. Step 5: Solve for x
    x = 30,712,425,892.66/205,912.16
  6. Step 6: Final answer
    x = 149,153.04

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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.