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Finding the Fourth Proportional to 80,940.66, 120,597.18 and 76,413.57

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Solution

The fourth proportional to 80,940.66, 120,597.18 and 76,413.57 is: 113,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,940.66 : 120,597.18 = 76,413.57 : x
  2. Step 2: Convert to fraction form
    80,940.66/120,597.18 = 76,413.57/x
  3. Step 3: Cross multiply
    80,940.66x = 120,597.18 × 76,413.57
  4. Step 4: Simplify right side
    80,940.66x = 9,215,261,055.73
  5. Step 5: Solve for x
    x = 9,215,261,055.73/80,940.66
  6. Step 6: Final answer
    x = 113,852.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.