Finding the Fourth Proportional to 116.42, 160.56 and 86.92
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Solution
The fourth proportional to 116.42, 160.56 and 86.92 is: 119.88
Step by Step Solution
- Step 1: Write the proportion equation
116.42 : 160.56 = 86.92 : x - Step 2: Convert to fraction form
116.42/160.56 = 86.92/x - Step 3: Cross multiply
116.42x = 160.56 × 86.92 - Step 4: Simplify right side
116.42x = 13,955.88 - Step 5: Solve for x
x = 13,955.88/116.42 - Step 6: Final answer
x = 119.88
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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.