Finding the Fourth Proportional to 125.24, 187.76 and 84.53
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Solution
The fourth proportional to 125.24, 187.76 and 84.53 is: 126.72
Step by Step Solution
- Step 1: Write the proportion equation
125.24 : 187.76 = 84.53 : x - Step 2: Convert to fraction form
125.24/187.76 = 84.53/x - Step 3: Cross multiply
125.24x = 187.76 × 84.53 - Step 4: Simplify right side
125.24x = 15,869.99 - Step 5: Solve for x
x = 15,869.99/125.24 - Step 6: Final answer
x = 126.72
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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.