Finding the Fourth Proportional to 126.92, 190.36 and 66.08
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Solution
The fourth proportional to 126.92, 190.36 and 66.08 is: 99.11
Step by Step Solution
- Step 1: Write the proportion equation
126.92 : 190.36 = 66.08 : x - Step 2: Convert to fraction form
126.92/190.36 = 66.08/x - Step 3: Cross multiply
126.92x = 190.36 × 66.08 - Step 4: Simplify right side
126.92x = 12,578.99 - Step 5: Solve for x
x = 12,578.99/126.92 - Step 6: Final answer
x = 99.11
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.