Finding the Fourth Proportional to 121,956.80, 182,935.20 and 80,394.08
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Solution
The fourth proportional to 121,956.80, 182,935.20 and 80,394.08 is: 120,591.12
Step by Step Solution
- Step 1: Write the proportion equation
121,956.80 : 182,935.20 = 80,394.08 : x - Step 2: Convert to fraction form
121,956.80/182,935.20 = 80,394.08/x - Step 3: Cross multiply
121,956.80x = 182,935.20 × 80,394.08 - Step 4: Simplify right side
121,956.80x = 14,706,907,519.43 - Step 5: Solve for x
x = 14,706,907,519.43/121,956.80 - Step 6: Final answer
x = 120,591.12
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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.