Finding the Fourth Proportional to 120,942.21, 166,902.26 and 66,496.68
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Solution
The fourth proportional to 120,942.21, 166,902.26 and 66,496.68 is: 91,766.52
Step by Step Solution
- Step 1: Write the proportion equation
120,942.21 : 166,902.26 = 66,496.68 : x - Step 2: Convert to fraction form
120,942.21/166,902.26 = 66,496.68/x - Step 3: Cross multiply
120,942.21x = 166,902.26 × 66,496.68 - Step 4: Simplify right side
120,942.21x = 11,098,446,174.50 - Step 5: Solve for x
x = 11,098,446,174.50/120,942.21 - Step 6: Final answer
x = 91,766.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.