Home / 115,268.20-172,979.98-40,389.03

Finding the Fourth Proportional to 115,268.20, 172,979.98 and 40,389.03

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Solution

The fourth proportional to 115,268.20, 172,979.98 and 40,389.03 is: 60,610.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,268.20 : 172,979.98 = 40,389.03 : x
  2. Step 2: Convert to fraction form
    115,268.20/172,979.98 = 40,389.03/x
  3. Step 3: Cross multiply
    115,268.20x = 172,979.98 × 40,389.03
  4. Step 4: Simplify right side
    115,268.20x = 6,986,493,500.65
  5. Step 5: Solve for x
    x = 6,986,493,500.65/115,268.20
  6. Step 6: Final answer
    x = 60,610.76

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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.