Finding the Fourth Proportional to 122.42, 183.54 and 79.14
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Solution
The fourth proportional to 122.42, 183.54 and 79.14 is: 118.65
Step by Step Solution
- Step 1: Write the proportion equation
122.42 : 183.54 = 79.14 : x - Step 2: Convert to fraction form
122.42/183.54 = 79.14/x - Step 3: Cross multiply
122.42x = 183.54 × 79.14 - Step 4: Simplify right side
122.42x = 14,525.36 - Step 5: Solve for x
x = 14,525.36/122.42 - Step 6: Final answer
x = 118.65
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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.