Home / 126,379.26-189,568.89-86,816.43

Finding the Fourth Proportional to 126,379.26, 189,568.89 and 86,816.43

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Solution

The fourth proportional to 126,379.26, 189,568.89 and 86,816.43 is: 130,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,379.26 : 189,568.89 = 86,816.43 : x
  2. Step 2: Convert to fraction form
    126,379.26/189,568.89 = 86,816.43/x
  3. Step 3: Cross multiply
    126,379.26x = 189,568.89 × 86,816.43
  4. Step 4: Simplify right side
    126,379.26x = 16,457,694,268.86
  5. Step 5: Solve for x
    x = 16,457,694,268.86/126,379.26
  6. Step 6: Final answer
    x = 130,224.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.