Finding the Fourth Proportional to 129,186.05, 193,766.54 and 39,229.54
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Solution
The fourth proportional to 129,186.05, 193,766.54 and 39,229.54 is: 58,840.50
Step by Step Solution
- Step 1: Write the proportion equation
129,186.05 : 193,766.54 = 39,229.54 : x - Step 2: Convert to fraction form
129,186.05/193,766.54 = 39,229.54/x - Step 3: Cross multiply
129,186.05x = 193,766.54 × 39,229.54 - Step 4: Simplify right side
129,186.05x = 7,601,371,388.88 - Step 5: Solve for x
x = 7,601,371,388.88/129,186.05 - Step 6: Final answer
x = 58,840.50
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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.