Home / 135,268.19-186,729.89-80,839.56

Finding the Fourth Proportional to 135,268.19, 186,729.89 and 80,839.56

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Solution

The fourth proportional to 135,268.19, 186,729.89 and 80,839.56 is: 111,594.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,268.19 : 186,729.89 = 80,839.56 : x
  2. Step 2: Convert to fraction form
    135,268.19/186,729.89 = 80,839.56/x
  3. Step 3: Cross multiply
    135,268.19x = 186,729.89 × 80,839.56
  4. Step 4: Simplify right side
    135,268.19x = 15,095,162,146.45
  5. Step 5: Solve for x
    x = 15,095,162,146.45/135,268.19
  6. Step 6: Final answer
    x = 111,594.32

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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.