Finding the Fourth Proportional to 135.26, 186.75 and 104.12
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Solution
The fourth proportional to 135.26, 186.75 and 104.12 is: 143.76
Step by Step Solution
- Step 1: Write the proportion equation
135.26 : 186.75 = 104.12 : x - Step 2: Convert to fraction form
135.26/186.75 = 104.12/x - Step 3: Cross multiply
135.26x = 186.75 × 104.12 - Step 4: Simplify right side
135.26x = 19,444.41 - Step 5: Solve for x
x = 19,444.41/135.26 - Step 6: Final answer
x = 143.76
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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.