Finding the Fourth Proportional to 122.09, 183.08 and 70.75
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Solution
The fourth proportional to 122.09, 183.08 and 70.75 is: 106.09
Step by Step Solution
- Step 1: Write the proportion equation
122.09 : 183.08 = 70.75 : x - Step 2: Convert to fraction form
122.09/183.08 = 70.75/x - Step 3: Cross multiply
122.09x = 183.08 × 70.75 - Step 4: Simplify right side
122.09x = 12,952.21 - Step 5: Solve for x
x = 12,952.21/122.09 - Step 6: Final answer
x = 106.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.