Finding the Fourth Proportional to 125.74, 173.66 and 84.47
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Solution
The fourth proportional to 125.74, 173.66 and 84.47 is: 116.65
Step by Step Solution
- Step 1: Write the proportion equation
125.74 : 173.66 = 84.47 : x - Step 2: Convert to fraction form
125.74/173.66 = 84.47/x - Step 3: Cross multiply
125.74x = 173.66 × 84.47 - Step 4: Simplify right side
125.74x = 14,668.24 - Step 5: Solve for x
x = 14,668.24/125.74 - Step 6: Final answer
x = 116.65
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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.