Finding the Fourth Proportional to 167.99, 251.99 and 81.31
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Solution
The fourth proportional to 167.99, 251.99 and 81.31 is: 121.97
Step by Step Solution
- Step 1: Write the proportion equation
167.99 : 251.99 = 81.31 : x - Step 2: Convert to fraction form
167.99/251.99 = 81.31/x - Step 3: Cross multiply
167.99x = 251.99 × 81.31 - Step 4: Simplify right side
167.99x = 20,489.31 - Step 5: Solve for x
x = 20,489.31/167.99 - Step 6: Final answer
x = 121.97
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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.