Finding the Fourth Proportional to 128,942.40, 193,413.60 and 97,838.40
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Solution
The fourth proportional to 128,942.40, 193,413.60 and 97,838.40 is: 146,757.60
Step by Step Solution
- Step 1: Write the proportion equation
128,942.40 : 193,413.60 = 97,838.40 : x - Step 2: Convert to fraction form
128,942.40/193,413.60 = 97,838.40/x - Step 3: Cross multiply
128,942.40x = 193,413.60 × 97,838.40 - Step 4: Simplify right side
128,942.40x = 18,923,277,162.24 - Step 5: Solve for x
x = 18,923,277,162.24/128,942.40 - Step 6: Final answer
x = 146,757.60
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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.