Finding the Fourth Proportional to 127.63, 191.16 and 68.09
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Solution
The fourth proportional to 127.63, 191.16 and 68.09 is: 101.99
Step by Step Solution
- Step 1: Write the proportion equation
127.63 : 191.16 = 68.09 : x - Step 2: Convert to fraction form
127.63/191.16 = 68.09/x - Step 3: Cross multiply
127.63x = 191.16 × 68.09 - Step 4: Simplify right side
127.63x = 13,016.20 - Step 5: Solve for x
x = 13,016.20/127.63 - Step 6: Final answer
x = 101.99
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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.