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Finding the Fourth Proportional to 199,971.19, 300,067.49 and 119,812.17

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Solution

The fourth proportional to 199,971.19, 300,067.49 and 119,812.17 is: 179,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,971.19 : 300,067.49 = 119,812.17 : x
  2. Step 2: Convert to fraction form
    199,971.19/300,067.49 = 119,812.17/x
  3. Step 3: Cross multiply
    199,971.19x = 300,067.49 × 119,812.17
  4. Step 4: Simplify right side
    199,971.19x = 35,951,737,422.88
  5. Step 5: Solve for x
    x = 35,951,737,422.88/199,971.19
  6. Step 6: Final answer
    x = 179,784.59

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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.