Home / 135,631.85-187,164.45-75,198.96

Finding the Fourth Proportional to 135,631.85, 187,164.45 and 75,198.96

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Solution

The fourth proportional to 135,631.85, 187,164.45 and 75,198.96 is: 103,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,631.85 : 187,164.45 = 75,198.96 : x
  2. Step 2: Convert to fraction form
    135,631.85/187,164.45 = 75,198.96/x
  3. Step 3: Cross multiply
    135,631.85x = 187,164.45 × 75,198.96
  4. Step 4: Simplify right side
    135,631.85x = 14,074,571,988.97
  5. Step 5: Solve for x
    x = 14,074,571,988.97/135,631.85
  6. Step 6: Final answer
    x = 103,770.41

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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.