Finding the Fourth Proportional to 129,809.92, 194,715.12 and 36,316.48
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Solution
The fourth proportional to 129,809.92, 194,715.12 and 36,316.48 is: 54,474.79
Step by Step Solution
- Step 1: Write the proportion equation
129,809.92 : 194,715.12 = 36,316.48 : x - Step 2: Convert to fraction form
129,809.92/194,715.12 = 36,316.48/x - Step 3: Cross multiply
129,809.92x = 194,715.12 × 36,316.48 - Step 4: Simplify right side
129,809.92x = 7,071,367,761.18 - Step 5: Solve for x
x = 7,071,367,761.18/129,809.92 - Step 6: Final answer
x = 54,474.79
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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.