Finding the Fourth Proportional to 129,954.48, 179,338.68 and 76,240.44
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Solution
The fourth proportional to 129,954.48, 179,338.68 and 76,240.44 is: 105,212.69
Step by Step Solution
- Step 1: Write the proportion equation
129,954.48 : 179,338.68 = 76,240.44 : x - Step 2: Convert to fraction form
129,954.48/179,338.68 = 76,240.44/x - Step 3: Cross multiply
129,954.48x = 179,338.68 × 76,240.44 - Step 4: Simplify right side
129,954.48x = 13,672,859,872.22 - Step 5: Solve for x
x = 13,672,859,872.22/129,954.48 - Step 6: Final answer
x = 105,212.69
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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.