Finding the Fourth Proportional to 126.75, 174.92 and 68.53
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Solution
The fourth proportional to 126.75, 174.92 and 68.53 is: 94.57
Step by Step Solution
- Step 1: Write the proportion equation
126.75 : 174.92 = 68.53 : x - Step 2: Convert to fraction form
126.75/174.92 = 68.53/x - Step 3: Cross multiply
126.75x = 174.92 × 68.53 - Step 4: Simplify right side
126.75x = 11,987.14 - Step 5: Solve for x
x = 11,987.14/126.75 - Step 6: Final answer
x = 94.57
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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.