Home / 115,279.10-172,933.77-45,149.30

Finding the Fourth Proportional to 115,279.10, 172,933.77 and 45,149.30

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Solution

The fourth proportional to 115,279.10, 172,933.77 and 45,149.30 is: 67,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,279.10 : 172,933.77 = 45,149.30 : x
  2. Step 2: Convert to fraction form
    115,279.10/172,933.77 = 45,149.30/x
  3. Step 3: Cross multiply
    115,279.10x = 172,933.77 × 45,149.30
  4. Step 4: Simplify right side
    115,279.10x = 7,807,837,797.19
  5. Step 5: Solve for x
    x = 7,807,837,797.19/115,279.10
  6. Step 6: Final answer
    x = 67,729.87

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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.