Finding the Fourth Proportional to 126.99, 175.21 and 80.37
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Solution
The fourth proportional to 126.99, 175.21 and 80.37 is: 110.89
Step by Step Solution
- Step 1: Write the proportion equation
126.99 : 175.21 = 80.37 : x - Step 2: Convert to fraction form
126.99/175.21 = 80.37/x - Step 3: Cross multiply
126.99x = 175.21 × 80.37 - Step 4: Simplify right side
126.99x = 14,081.63 - Step 5: Solve for x
x = 14,081.63/126.99 - Step 6: Final answer
x = 110.89
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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.