Finding the Fourth Proportional to 119.12, 163.36 and 112.88
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Solution
The fourth proportional to 119.12, 163.36 and 112.88 is: 154.80
Step by Step Solution
- Step 1: Write the proportion equation
119.12 : 163.36 = 112.88 : x - Step 2: Convert to fraction form
119.12/163.36 = 112.88/x - Step 3: Cross multiply
119.12x = 163.36 × 112.88 - Step 4: Simplify right side
119.12x = 18,440.08 - Step 5: Solve for x
x = 18,440.08/119.12 - Step 6: Final answer
x = 154.80
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.