Finding the Fourth Proportional to 122.36, 168.84 and 94.68
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Solution
The fourth proportional to 122.36, 168.84 and 94.68 is: 130.65
Step by Step Solution
- Step 1: Write the proportion equation
122.36 : 168.84 = 94.68 : x - Step 2: Convert to fraction form
122.36/168.84 = 94.68/x - Step 3: Cross multiply
122.36x = 168.84 × 94.68 - Step 4: Simplify right side
122.36x = 15,985.77 - Step 5: Solve for x
x = 15,985.77/122.36 - Step 6: Final answer
x = 130.65
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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.