Finding the Fourth Proportional to 139,850.97, 192,987.62 and 79,413.63
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Solution
The fourth proportional to 139,850.97, 192,987.62 and 79,413.63 is: 109,586.99
Step by Step Solution
- Step 1: Write the proportion equation
139,850.97 : 192,987.62 = 79,413.63 : x - Step 2: Convert to fraction form
139,850.97/192,987.62 = 79,413.63/x - Step 3: Cross multiply
139,850.97x = 192,987.62 × 79,413.63 - Step 4: Simplify right side
139,850.97x = 15,325,846,484.32 - Step 5: Solve for x
x = 15,325,846,484.32/139,850.97 - Step 6: Final answer
x = 109,586.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.