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Finding the Fourth Proportional to 198,662.63, 274,145.51 and 112,620.38

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Solution

The fourth proportional to 198,662.63, 274,145.51 and 112,620.38 is: 155,411.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,662.63 : 274,145.51 = 112,620.38 : x
  2. Step 2: Convert to fraction form
    198,662.63/274,145.51 = 112,620.38/x
  3. Step 3: Cross multiply
    198,662.63x = 274,145.51 × 112,620.38
  4. Step 4: Simplify right side
    198,662.63x = 30,874,370,422.32
  5. Step 5: Solve for x
    x = 30,874,370,422.32/198,662.63
  6. Step 6: Final answer
    x = 155,411.07

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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.