Home / 204,067.89-305,592.75-128,961.45

Finding the Fourth Proportional to 204,067.89, 305,592.75 and 128,961.45

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Solution

The fourth proportional to 204,067.89, 305,592.75 and 128,961.45 is: 193,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,067.89 : 305,592.75 = 128,961.45 : x
  2. Step 2: Convert to fraction form
    204,067.89/305,592.75 = 128,961.45/x
  3. Step 3: Cross multiply
    204,067.89x = 305,592.75 × 128,961.45
  4. Step 4: Simplify right side
    204,067.89x = 39,409,684,149.49
  5. Step 5: Solve for x
    x = 39,409,684,149.49/204,067.89
  6. Step 6: Final answer
    x = 193,120.46

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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.