Finding the Fourth Proportional to 122.66, 183.84 and 79.19
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Solution
The fourth proportional to 122.66, 183.84 and 79.19 is: 118.69
Step by Step Solution
- Step 1: Write the proportion equation
122.66 : 183.84 = 79.19 : x - Step 2: Convert to fraction form
122.66/183.84 = 79.19/x - Step 3: Cross multiply
122.66x = 183.84 × 79.19 - Step 4: Simplify right side
122.66x = 14,558.29 - Step 5: Solve for x
x = 14,558.29/122.66 - Step 6: Final answer
x = 118.69
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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.