Home / 200,101.78-276,164.40-115,217.02

Finding the Fourth Proportional to 200,101.78, 276,164.40 and 115,217.02

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Solution

The fourth proportional to 200,101.78, 276,164.40 and 115,217.02 is: 159,013.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,101.78 : 276,164.40 = 115,217.02 : x
  2. Step 2: Convert to fraction form
    200,101.78/276,164.40 = 115,217.02/x
  3. Step 3: Cross multiply
    200,101.78x = 276,164.40 × 115,217.02
  4. Step 4: Simplify right side
    200,101.78x = 31,818,839,198.09
  5. Step 5: Solve for x
    x = 31,818,839,198.09/200,101.78
  6. Step 6: Final answer
    x = 159,013.27

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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.