Finding the Fourth Proportional to 121,514.24, 167,644.80 and 71,194.88
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Solution
The fourth proportional to 121,514.24, 167,644.80 and 71,194.88 is: 98,222.66
Step by Step Solution
- Step 1: Write the proportion equation
121,514.24 : 167,644.80 = 71,194.88 : x - Step 2: Convert to fraction form
121,514.24/167,644.80 = 71,194.88/x - Step 3: Cross multiply
121,514.24x = 167,644.80 × 71,194.88 - Step 4: Simplify right side
121,514.24x = 11,935,451,418.62 - Step 5: Solve for x
x = 11,935,451,418.62/121,514.24 - Step 6: Final answer
x = 98,222.66
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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.