Home / 231,910.68-320,037.46-135,171.78

Finding the Fourth Proportional to 231,910.68, 320,037.46 and 135,171.78

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Solution

The fourth proportional to 231,910.68, 320,037.46 and 135,171.78 is: 186,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,910.68 : 320,037.46 = 135,171.78 : x
  2. Step 2: Convert to fraction form
    231,910.68/320,037.46 = 135,171.78/x
  3. Step 3: Cross multiply
    231,910.68x = 320,037.46 × 135,171.78
  4. Step 4: Simplify right side
    231,910.68x = 43,260,033,134.88
  5. Step 5: Solve for x
    x = 43,260,033,134.88/231,910.68
  6. Step 6: Final answer
    x = 186,537.48

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1.5x scale

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.