Home / 100,231.80-138,334.62-57,782.04

Finding the Fourth Proportional to 100,231.80, 138,334.62 and 57,782.04

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Solution

The fourth proportional to 100,231.80, 138,334.62 and 57,782.04 is: 79,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,231.80 : 138,334.62 = 57,782.04 : x
  2. Step 2: Convert to fraction form
    100,231.80/138,334.62 = 57,782.04/x
  3. Step 3: Cross multiply
    100,231.80x = 138,334.62 × 57,782.04
  4. Step 4: Simplify right side
    100,231.80x = 7,993,256,546.22
  5. Step 5: Solve for x
    x = 7,993,256,546.22/100,231.80
  6. Step 6: Final answer
    x = 79,747.71

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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.