Home / 204,690.28-307,076.82-86,361.88

Finding the Fourth Proportional to 204,690.28, 307,076.82 and 86,361.88

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Solution

The fourth proportional to 204,690.28, 307,076.82 and 86,361.88 is: 129,560.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,690.28 : 307,076.82 = 86,361.88 : x
  2. Step 2: Convert to fraction form
    204,690.28/307,076.82 = 86,361.88/x
  3. Step 3: Cross multiply
    204,690.28x = 307,076.82 × 86,361.88
  4. Step 4: Simplify right side
    204,690.28x = 26,519,731,479.62
  5. Step 5: Solve for x
    x = 26,519,731,479.62/204,690.28
  6. Step 6: Final answer
    x = 129,560.29

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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.