Finding the Fourth Proportional to 122.99, 169.76 and 113.81
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Solution
The fourth proportional to 122.99, 169.76 and 113.81 is: 157.09
Step by Step Solution
- Step 1: Write the proportion equation
122.99 : 169.76 = 113.81 : x - Step 2: Convert to fraction form
122.99/169.76 = 113.81/x - Step 3: Cross multiply
122.99x = 169.76 × 113.81 - Step 4: Simplify right side
122.99x = 19,319.82 - Step 5: Solve for x
x = 19,319.82/122.99 - Step 6: Final answer
x = 157.09
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.