Home / 141,129.54-194,709.42-80,656.56

Finding the Fourth Proportional to 141,129.54, 194,709.42 and 80,656.56

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Solution

The fourth proportional to 141,129.54, 194,709.42 and 80,656.56 is: 111,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,129.54 : 194,709.42 = 80,656.56 : x
  2. Step 2: Convert to fraction form
    141,129.54/194,709.42 = 80,656.56/x
  3. Step 3: Cross multiply
    141,129.54x = 194,709.42 × 80,656.56
  4. Step 4: Simplify right side
    141,129.54x = 15,704,592,016.80
  5. Step 5: Solve for x
    x = 15,704,592,016.80/141,129.54
  6. Step 6: Final answer
    x = 111,277.85

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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.