Finding the Fourth Proportional to 129,279.75, 193,930.97 and 35,786.31
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Solution
The fourth proportional to 129,279.75, 193,930.97 and 35,786.31 is: 53,682.60
Step by Step Solution
- Step 1: Write the proportion equation
129,279.75 : 193,930.97 = 35,786.31 : x - Step 2: Convert to fraction form
129,279.75/193,930.97 = 35,786.31/x - Step 3: Cross multiply
129,279.75x = 193,930.97 × 35,786.31 - Step 4: Simplify right side
129,279.75x = 6,940,073,632.09 - Step 5: Solve for x
x = 6,940,073,632.09/129,279.75 - Step 6: Final answer
x = 53,682.60
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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.