Home / 135,721.96-187,296.78-75,293.80

Finding the Fourth Proportional to 135,721.96, 187,296.78 and 75,293.80

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Solution

The fourth proportional to 135,721.96, 187,296.78 and 75,293.80 is: 103,905.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,721.96 : 187,296.78 = 75,293.80 : x
  2. Step 2: Convert to fraction form
    135,721.96/187,296.78 = 75,293.80/x
  3. Step 3: Cross multiply
    135,721.96x = 187,296.78 × 75,293.80
  4. Step 4: Simplify right side
    135,721.96x = 14,102,286,293.96
  5. Step 5: Solve for x
    x = 14,102,286,293.96/135,721.96
  6. Step 6: Final answer
    x = 103,905.71

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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.