Finding the Fourth Proportional to 121,957.16, 182,935.74 and 80,394.44
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Solution
The fourth proportional to 121,957.16, 182,935.74 and 80,394.44 is: 120,591.66
Step by Step Solution
- Step 1: Write the proportion equation
121,957.16 : 182,935.74 = 80,394.44 : x - Step 2: Convert to fraction form
121,957.16/182,935.74 = 80,394.44/x - Step 3: Cross multiply
121,957.16x = 182,935.74 × 80,394.44 - Step 4: Simplify right side
121,957.16x = 14,707,016,629.64 - Step 5: Solve for x
x = 14,707,016,629.64/121,957.16 - Step 6: Final answer
x = 120,591.66
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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.