Finding the Fourth Proportional to 122.61, 183.92 and 107.67
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Solution
The fourth proportional to 122.61, 183.92 and 107.67 is: 161.51
Step by Step Solution
- Step 1: Write the proportion equation
122.61 : 183.92 = 107.67 : x - Step 2: Convert to fraction form
122.61/183.92 = 107.67/x - Step 3: Cross multiply
122.61x = 183.92 × 107.67 - Step 4: Simplify right side
122.61x = 19,802.13 - Step 5: Solve for x
x = 19,802.13/122.61 - Step 6: Final answer
x = 161.51
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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.