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Finding the Fourth Proportional to 135,866.62, 187,497.24 and 82,187.56

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Solution

The fourth proportional to 135,866.62, 187,497.24 and 82,187.56 is: 113,419.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,866.62 : 187,497.24 = 82,187.56 : x
  2. Step 2: Convert to fraction form
    135,866.62/187,497.24 = 82,187.56/x
  3. Step 3: Cross multiply
    135,866.62x = 187,497.24 × 82,187.56
  4. Step 4: Simplify right side
    135,866.62x = 15,409,940,662.33
  5. Step 5: Solve for x
    x = 15,409,940,662.33/135,866.62
  6. Step 6: Final answer
    x = 113,419.62

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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.