Finding the Fourth Proportional to 136,716.26, 188,668.09 and 76,286.26
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Solution
The fourth proportional to 136,716.26, 188,668.09 and 76,286.26 is: 105,274.84
Step by Step Solution
- Step 1: Write the proportion equation
136,716.26 : 188,668.09 = 76,286.26 : x - Step 2: Convert to fraction form
136,716.26/188,668.09 = 76,286.26/x - Step 3: Cross multiply
136,716.26x = 188,668.09 × 76,286.26 - Step 4: Simplify right side
136,716.26x = 14,392,781,808.27 - Step 5: Solve for x
x = 14,392,781,808.27/136,716.26 - Step 6: Final answer
x = 105,274.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.