Home / 245,739.60-339,131.52-138,316.56

Finding the Fourth Proportional to 245,739.60, 339,131.52 and 138,316.56

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Solution

The fourth proportional to 245,739.60, 339,131.52 and 138,316.56 is: 190,882.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,739.60 : 339,131.52 = 138,316.56 : x
  2. Step 2: Convert to fraction form
    245,739.60/339,131.52 = 138,316.56/x
  3. Step 3: Cross multiply
    245,739.60x = 339,131.52 × 138,316.56
  4. Step 4: Simplify right side
    245,739.60x = 46,907,505,233.97
  5. Step 5: Solve for x
    x = 46,907,505,233.97/245,739.60
  6. Step 6: Final answer
    x = 190,882.97

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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.