Home / 143,932.78-198,588.78-138,257.52

Finding the Fourth Proportional to 143,932.78, 198,588.78 and 138,257.52

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Solution

The fourth proportional to 143,932.78, 198,588.78 and 138,257.52 is: 190,758.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,932.78 : 198,588.78 = 138,257.52 : x
  2. Step 2: Convert to fraction form
    143,932.78/198,588.78 = 138,257.52/x
  3. Step 3: Cross multiply
    143,932.78x = 198,588.78 × 138,257.52
  4. Step 4: Simplify right side
    143,932.78x = 27,456,392,222.63
  5. Step 5: Solve for x
    x = 27,456,392,222.63/143,932.78
  6. Step 6: Final answer
    x = 190,758.44

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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.