Finding the Fourth Proportional to 136.74, 204.75 and 114.99
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Solution
The fourth proportional to 136.74, 204.75 and 114.99 is: 172.18
Step by Step Solution
- Step 1: Write the proportion equation
136.74 : 204.75 = 114.99 : x - Step 2: Convert to fraction form
136.74/204.75 = 114.99/x - Step 3: Cross multiply
136.74x = 204.75 × 114.99 - Step 4: Simplify right side
136.74x = 23,544.20 - Step 5: Solve for x
x = 23,544.20/136.74 - Step 6: Final answer
x = 172.18
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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.