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Finding the Fourth Proportional to 202,812.43, 279,889.86 and 112,168.37

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Solution

The fourth proportional to 202,812.43, 279,889.86 and 112,168.37 is: 154,797.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,812.43 : 279,889.86 = 112,168.37 : x
  2. Step 2: Convert to fraction form
    202,812.43/279,889.86 = 112,168.37/x
  3. Step 3: Cross multiply
    202,812.43x = 279,889.86 × 112,168.37
  4. Step 4: Simplify right side
    202,812.43x = 31,394,789,375.73
  5. Step 5: Solve for x
    x = 31,394,789,375.73/202,812.43
  6. Step 6: Final answer
    x = 154,797.17

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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.