Home / 206,979.07-285,654.78-115,107.51

Finding the Fourth Proportional to 206,979.07, 285,654.78 and 115,107.51

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Solution

The fourth proportional to 206,979.07, 285,654.78 and 115,107.51 is: 158,861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,979.07 : 285,654.78 = 115,107.51 : x
  2. Step 2: Convert to fraction form
    206,979.07/285,654.78 = 115,107.51/x
  3. Step 3: Cross multiply
    206,979.07x = 285,654.78 × 115,107.51
  4. Step 4: Simplify right side
    206,979.07x = 32,881,008,782.65
  5. Step 5: Solve for x
    x = 32,881,008,782.65/206,979.07
  6. Step 6: Final answer
    x = 158,861.51

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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.