Finding the Fourth Proportional to 129,413.62, 193,871.64 and 79,347.70
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Solution
The fourth proportional to 129,413.62, 193,871.64 and 79,347.70 is: 118,869.01
Step by Step Solution
- Step 1: Write the proportion equation
129,413.62 : 193,871.64 = 79,347.70 : x - Step 2: Convert to fraction form
129,413.62/193,871.64 = 79,347.70/x - Step 3: Cross multiply
129,413.62x = 193,871.64 × 79,347.70 - Step 4: Simplify right side
129,413.62x = 15,383,268,729.23 - Step 5: Solve for x
x = 15,383,268,729.23/129,413.62 - Step 6: Final answer
x = 118,869.01
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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.