Home / 115,286.13-172,982.64-48,741.78

Finding the Fourth Proportional to 115,286.13, 172,982.64 and 48,741.78

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Solution

The fourth proportional to 115,286.13, 172,982.64 and 48,741.78 is: 73,135.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,286.13 : 172,982.64 = 48,741.78 : x
  2. Step 2: Convert to fraction form
    115,286.13/172,982.64 = 48,741.78/x
  3. Step 3: Cross multiply
    115,286.13x = 172,982.64 × 48,741.78
  4. Step 4: Simplify right side
    115,286.13x = 8,431,481,782.70
  5. Step 5: Solve for x
    x = 8,431,481,782.70/115,286.13
  6. Step 6: Final answer
    x = 73,135.27

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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.