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Finding the Fourth Proportional to 129,969.11, 194,510.11 and 108,932.90

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Solution

The fourth proportional to 129,969.11, 194,510.11 and 108,932.90 is: 163,027.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,969.11 : 194,510.11 = 108,932.90 : x
  2. Step 2: Convert to fraction form
    129,969.11/194,510.11 = 108,932.90/x
  3. Step 3: Cross multiply
    129,969.11x = 194,510.11 × 108,932.90
  4. Step 4: Simplify right side
    129,969.11x = 21,188,550,361.62
  5. Step 5: Solve for x
    x = 21,188,550,361.62/129,969.11
  6. Step 6: Final answer
    x = 163,027.59

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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.