Finding the Fourth Proportional to 126.19, 174.01 and 84.73
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Solution
The fourth proportional to 126.19, 174.01 and 84.73 is: 116.84
Step by Step Solution
- Step 1: Write the proportion equation
126.19 : 174.01 = 84.73 : x - Step 2: Convert to fraction form
126.19/174.01 = 84.73/x - Step 3: Cross multiply
126.19x = 174.01 × 84.73 - Step 4: Simplify right side
126.19x = 14,743.87 - Step 5: Solve for x
x = 14,743.87/126.19 - Step 6: Final answer
x = 116.84
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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.