Home / 129,865.53-194,819.76-45,603.78

Finding the Fourth Proportional to 129,865.53, 194,819.76 and 45,603.78

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Solution

The fourth proportional to 129,865.53, 194,819.76 and 45,603.78 is: 68,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,865.53 : 194,819.76 = 45,603.78 : x
  2. Step 2: Convert to fraction form
    129,865.53/194,819.76 = 45,603.78/x
  3. Step 3: Cross multiply
    129,865.53x = 194,819.76 × 45,603.78
  4. Step 4: Simplify right side
    129,865.53x = 8,884,517,474.69
  5. Step 5: Solve for x
    x = 8,884,517,474.69/129,865.53
  6. Step 6: Final answer
    x = 68,413.21

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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.