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Finding the Fourth Proportional to 127,951.67, 191,920.58 and 39,205.43

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Solution

The fourth proportional to 127,951.67, 191,920.58 and 39,205.43 is: 58,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,951.67 : 191,920.58 = 39,205.43 : x
  2. Step 2: Convert to fraction form
    127,951.67/191,920.58 = 39,205.43/x
  3. Step 3: Cross multiply
    127,951.67x = 191,920.58 × 39,205.43
  4. Step 4: Simplify right side
    127,951.67x = 7,524,329,442.56
  5. Step 5: Solve for x
    x = 7,524,329,442.56/127,951.67
  6. Step 6: Final answer
    x = 58,806.03

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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.