Home / 200,515.79-276,693.38-115,616.45

Finding the Fourth Proportional to 200,515.79, 276,693.38 and 115,616.45

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Solution

The fourth proportional to 200,515.79, 276,693.38 and 115,616.45 is: 159,540.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,515.79 : 276,693.38 = 115,616.45 : x
  2. Step 2: Convert to fraction form
    200,515.79/276,693.38 = 115,616.45/x
  3. Step 3: Cross multiply
    200,515.79x = 276,693.38 × 115,616.45
  4. Step 4: Simplify right side
    200,515.79x = 31,990,305,239.68
  5. Step 5: Solve for x
    x = 31,990,305,239.68/200,515.79
  6. Step 6: Final answer
    x = 159,540.08

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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.