Finding the Fourth Proportional to 110.26, 165.21 and 86.14
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Solution
The fourth proportional to 110.26, 165.21 and 86.14 is: 129.07
Step by Step Solution
- Step 1: Write the proportion equation
110.26 : 165.21 = 86.14 : x - Step 2: Convert to fraction form
110.26/165.21 = 86.14/x - Step 3: Cross multiply
110.26x = 165.21 × 86.14 - Step 4: Simplify right side
110.26x = 14,231.19 - Step 5: Solve for x
x = 14,231.19/110.26 - Step 6: Final answer
x = 129.07
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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.