Home / 129,972.26-194,918.70-55,091

Finding the Fourth Proportional to 129,972.26, 194,918.70 and 55,091

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Solution

The fourth proportional to 129,972.26, 194,918.70 and 55,091 is: 82,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.26 : 194,918.70 = 55,091 : x
  2. Step 2: Convert to fraction form
    129,972.26/194,918.70 = 55,091/x
  3. Step 3: Cross multiply
    129,972.26x = 194,918.70 × 55,091
  4. Step 4: Simplify right side
    129,972.26x = 10,738,266,101.70
  5. Step 5: Solve for x
    x = 10,738,266,101.70/129,972.26
  6. Step 6: Final answer
    x = 82,619.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.