Finding the Fourth Proportional to 121,932.67, 168,324.62 and 91,729.52
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Solution
The fourth proportional to 121,932.67, 168,324.62 and 91,729.52 is: 126,630.02
Step by Step Solution
- Step 1: Write the proportion equation
121,932.67 : 168,324.62 = 91,729.52 : x - Step 2: Convert to fraction form
121,932.67/168,324.62 = 91,729.52/x - Step 3: Cross multiply
121,932.67x = 168,324.62 × 91,729.52 - Step 4: Simplify right side
121,932.67x = 15,440,336,596.78 - Step 5: Solve for x
x = 15,440,336,596.78/121,932.67 - Step 6: Final answer
x = 126,630.02
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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.