Home / 115,057.28-158,718.16-79,185.02

Finding the Fourth Proportional to 115,057.28, 158,718.16 and 79,185.02

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Solution

The fourth proportional to 115,057.28, 158,718.16 and 79,185.02 is: 109,233.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,057.28 : 158,718.16 = 79,185.02 : x
  2. Step 2: Convert to fraction form
    115,057.28/158,718.16 = 79,185.02/x
  3. Step 3: Cross multiply
    115,057.28x = 158,718.16 × 79,185.02
  4. Step 4: Simplify right side
    115,057.28x = 12,568,100,673.96
  5. Step 5: Solve for x
    x = 12,568,100,673.96/115,057.28
  6. Step 6: Final answer
    x = 109,233.42

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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.