Finding the Fourth Proportional to 120,711.48, 166,578.68 and 66,995.12
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Solution
The fourth proportional to 120,711.48, 166,578.68 and 66,995.12 is: 92,451.50
Step by Step Solution
- Step 1: Write the proportion equation
120,711.48 : 166,578.68 = 66,995.12 : x - Step 2: Convert to fraction form
120,711.48/166,578.68 = 66,995.12/x - Step 3: Cross multiply
120,711.48x = 166,578.68 × 66,995.12 - Step 4: Simplify right side
120,711.48x = 11,159,957,488.17 - Step 5: Solve for x
x = 11,159,957,488.17/120,711.48 - Step 6: Final answer
x = 92,451.50
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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.