Finding the Fourth Proportional to 121,414.40, 182,121.60 and 108,729.80
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Solution
The fourth proportional to 121,414.40, 182,121.60 and 108,729.80 is: 163,094.70
Step by Step Solution
- Step 1: Write the proportion equation
121,414.40 : 182,121.60 = 108,729.80 : x - Step 2: Convert to fraction form
121,414.40/182,121.60 = 108,729.80/x - Step 3: Cross multiply
121,414.40x = 182,121.60 × 108,729.80 - Step 4: Simplify right side
121,414.40x = 19,802,045,143.68 - Step 5: Solve for x
x = 19,802,045,143.68/121,414.40 - Step 6: Final answer
x = 163,094.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.