Finding the Fourth Proportional to 125.40, 186.99 and 121.44
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Solution
The fourth proportional to 125.40, 186.99 and 121.44 is: 181.09
Step by Step Solution
- Step 1: Write the proportion equation
125.40 : 186.99 = 121.44 : x - Step 2: Convert to fraction form
125.40/186.99 = 121.44/x - Step 3: Cross multiply
125.40x = 186.99 × 121.44 - Step 4: Simplify right side
125.40x = 22,708.07 - Step 5: Solve for x
x = 22,708.07/125.40 - Step 6: Final answer
x = 181.09
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.