Finding the Fourth Proportional to 137,549.19, 206,383.17 and 74,413.78
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Solution
The fourth proportional to 137,549.19, 206,383.17 and 74,413.78 is: 111,652.80
Step by Step Solution
- Step 1: Write the proportion equation
137,549.19 : 206,383.17 = 74,413.78 : x - Step 2: Convert to fraction form
137,549.19/206,383.17 = 74,413.78/x - Step 3: Cross multiply
137,549.19x = 206,383.17 × 74,413.78 - Step 4: Simplify right side
137,549.19x = 15,357,751,808.08 - Step 5: Solve for x
x = 15,357,751,808.08/137,549.19 - Step 6: Final answer
x = 111,652.80
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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.