Home / 135,788.43-187,387.78-75,359.80

Finding the Fourth Proportional to 135,788.43, 187,387.78 and 75,359.80

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Solution

The fourth proportional to 135,788.43, 187,387.78 and 75,359.80 is: 103,996.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,788.43 : 187,387.78 = 75,359.80 : x
  2. Step 2: Convert to fraction form
    135,788.43/187,387.78 = 75,359.80/x
  3. Step 3: Cross multiply
    135,788.43x = 187,387.78 × 75,359.80
  4. Step 4: Simplify right side
    135,788.43x = 14,121,504,309.51
  5. Step 5: Solve for x
    x = 14,121,504,309.51/135,788.43
  6. Step 6: Final answer
    x = 103,996.37

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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.