Finding the Fourth Proportional to 128,942.24, 193,413.42 and 40,202.90
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Solution
The fourth proportional to 128,942.24, 193,413.42 and 40,202.90 is: 60,304.37
Step by Step Solution
- Step 1: Write the proportion equation
128,942.24 : 193,413.42 = 40,202.90 : x - Step 2: Convert to fraction form
128,942.24/193,413.42 = 40,202.90/x - Step 3: Cross multiply
128,942.24x = 193,413.42 × 40,202.90 - Step 4: Simplify right side
128,942.24x = 7,775,780,382.92 - Step 5: Solve for x
x = 7,775,780,382.92/128,942.24 - Step 6: Final answer
x = 60,304.37
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1.5x scale
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.