Finding the Fourth Proportional to 125.67, 173.39 and 76.53
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Solution
The fourth proportional to 125.67, 173.39 and 76.53 is: 105.59
Step by Step Solution
- Step 1: Write the proportion equation
125.67 : 173.39 = 76.53 : x - Step 2: Convert to fraction form
125.67/173.39 = 76.53/x - Step 3: Cross multiply
125.67x = 173.39 × 76.53 - Step 4: Simplify right side
125.67x = 13,269.15 - Step 5: Solve for x
x = 13,269.15/125.67 - Step 6: Final answer
x = 105.59
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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.