Finding the Fourth Proportional to 123.23, 169.92 and 92.09
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Solution
The fourth proportional to 123.23, 169.92 and 92.09 is: 126.99
Step by Step Solution
- Step 1: Write the proportion equation
123.23 : 169.92 = 92.09 : x - Step 2: Convert to fraction form
123.23/169.92 = 92.09/x - Step 3: Cross multiply
123.23x = 169.92 × 92.09 - Step 4: Simplify right side
123.23x = 15,648.36 - Step 5: Solve for x
x = 15,648.36/123.23 - Step 6: Final answer
x = 126.99
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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.