Home / 135,712.20-187,283.96-75,286.80

Finding the Fourth Proportional to 135,712.20, 187,283.96 and 75,286.80

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Solution

The fourth proportional to 135,712.20, 187,283.96 and 75,286.80 is: 103,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,712.20 : 187,283.96 = 75,286.80 : x
  2. Step 2: Convert to fraction form
    135,712.20/187,283.96 = 75,286.80/x
  3. Step 3: Cross multiply
    135,712.20x = 187,283.96 × 75,286.80
  4. Step 4: Simplify right side
    135,712.20x = 14,100,010,039.73
  5. Step 5: Solve for x
    x = 14,100,010,039.73/135,712.20
  6. Step 6: Final answer
    x = 103,896.41

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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.