Finding the Fourth Proportional to 131,413.20, 181,341.72 and 74,824.08
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Solution
The fourth proportional to 131,413.20, 181,341.72 and 74,824.08 is: 103,252.39
Step by Step Solution
- Step 1: Write the proportion equation
131,413.20 : 181,341.72 = 74,824.08 : x - Step 2: Convert to fraction form
131,413.20/181,341.72 = 74,824.08/x - Step 3: Cross multiply
131,413.20x = 181,341.72 × 74,824.08 - Step 4: Simplify right side
131,413.20x = 13,568,727,364.62 - Step 5: Solve for x
x = 13,568,727,364.62/131,413.20 - Step 6: Final answer
x = 103,252.39
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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.