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Finding the Fourth Proportional to 207,935.91, 312,042.27 and 113,189.97

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Solution

The fourth proportional to 207,935.91, 312,042.27 and 113,189.97 is: 169,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,935.91 : 312,042.27 = 113,189.97 : x
  2. Step 2: Convert to fraction form
    207,935.91/312,042.27 = 113,189.97/x
  3. Step 3: Cross multiply
    207,935.91x = 312,042.27 × 113,189.97
  4. Step 4: Simplify right side
    207,935.91x = 35,320,056,774.65
  5. Step 5: Solve for x
    x = 35,320,056,774.65/207,935.91
  6. Step 6: Final answer
    x = 169,860.30

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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.