Finding the Fourth Proportional to 125.14, 187.77 and 76.44
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Solution
The fourth proportional to 125.14, 187.77 and 76.44 is: 114.70
Step by Step Solution
- Step 1: Write the proportion equation
125.14 : 187.77 = 76.44 : x - Step 2: Convert to fraction form
125.14/187.77 = 76.44/x - Step 3: Cross multiply
125.14x = 187.77 × 76.44 - Step 4: Simplify right side
125.14x = 14,353.14 - Step 5: Solve for x
x = 14,353.14/125.14 - Step 6: Final answer
x = 114.70
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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.