Finding the Fourth Proportional to 121,286.12, 181,728.05 and 73,757.44
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Solution
The fourth proportional to 121,286.12, 181,728.05 and 73,757.44 is: 110,513.85
Step by Step Solution
- Step 1: Write the proportion equation
121,286.12 : 181,728.05 = 73,757.44 : x - Step 2: Convert to fraction form
121,286.12/181,728.05 = 73,757.44/x - Step 3: Cross multiply
121,286.12x = 181,728.05 × 73,757.44 - Step 4: Simplify right side
121,286.12x = 13,403,795,744.19 - Step 5: Solve for x
x = 13,403,795,744.19/121,286.12 - Step 6: Final answer
x = 110,513.85
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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.