Finding the Fourth Proportional to 126.91, 175.12 and 80.26
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Solution
The fourth proportional to 126.91, 175.12 and 80.26 is: 110.75
Step by Step Solution
- Step 1: Write the proportion equation
126.91 : 175.12 = 80.26 : x - Step 2: Convert to fraction form
126.91/175.12 = 80.26/x - Step 3: Cross multiply
126.91x = 175.12 × 80.26 - Step 4: Simplify right side
126.91x = 14,055.13 - Step 5: Solve for x
x = 14,055.13/126.91 - Step 6: Final answer
x = 110.75
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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.