Home / 128,436.76-192,655.68-34,942.42

Finding the Fourth Proportional to 128,436.76, 192,655.68 and 34,942.42

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Solution

The fourth proportional to 128,436.76, 192,655.68 and 34,942.42 is: 52,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,436.76 : 192,655.68 = 34,942.42 : x
  2. Step 2: Convert to fraction form
    128,436.76/192,655.68 = 34,942.42/x
  3. Step 3: Cross multiply
    128,436.76x = 192,655.68 × 34,942.42
  4. Step 4: Simplify right side
    128,436.76x = 6,731,855,685.95
  5. Step 5: Solve for x
    x = 6,731,855,685.95/128,436.76
  6. Step 6: Final answer
    x = 52,413.78

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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.