Home / 135,945.25-187,672.61-84,986.30

Finding the Fourth Proportional to 135,945.25, 187,672.61 and 84,986.30

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Solution

The fourth proportional to 135,945.25, 187,672.61 and 84,986.30 is: 117,323.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,945.25 : 187,672.61 = 84,986.30 : x
  2. Step 2: Convert to fraction form
    135,945.25/187,672.61 = 84,986.30/x
  3. Step 3: Cross multiply
    135,945.25x = 187,672.61 × 84,986.30
  4. Step 4: Simplify right side
    135,945.25x = 15,949,600,735.24
  5. Step 5: Solve for x
    x = 15,949,600,735.24/135,945.25
  6. Step 6: Final answer
    x = 117,323.71

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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.