Finding the Fourth Proportional to 125.67, 188.11 and 81.99
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Solution
The fourth proportional to 125.67, 188.11 and 81.99 is: 122.72
Step by Step Solution
- Step 1: Write the proportion equation
125.67 : 188.11 = 81.99 : x - Step 2: Convert to fraction form
125.67/188.11 = 81.99/x - Step 3: Cross multiply
125.67x = 188.11 × 81.99 - Step 4: Simplify right side
125.67x = 15,422.73 - Step 5: Solve for x
x = 15,422.73/125.67 - Step 6: Final answer
x = 122.72
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.