Finding the Fourth Proportional to 120,589.65, 166,414.14 and 66,879.63
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Solution
The fourth proportional to 120,589.65, 166,414.14 and 66,879.63 is: 92,294.12
Step by Step Solution
- Step 1: Write the proportion equation
120,589.65 : 166,414.14 = 66,879.63 : x - Step 2: Convert to fraction form
120,589.65/166,414.14 = 66,879.63/x - Step 3: Cross multiply
120,589.65x = 166,414.14 × 66,879.63 - Step 4: Simplify right side
120,589.65x = 11,129,716,109.97 - Step 5: Solve for x
x = 11,129,716,109.97/120,589.65 - Step 6: Final answer
x = 92,294.12
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1.5x scale
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.