Finding the Fourth Proportional to 223,742.82, 308,765.14 and 121,768.68
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Solution
The fourth proportional to 223,742.82, 308,765.14 and 121,768.68 is: 168,040.80
Step by Step Solution
- Step 1: Write the proportion equation
223,742.82 : 308,765.14 = 121,768.68 : x - Step 2: Convert to fraction form
223,742.82/308,765.14 = 121,768.68/x - Step 3: Cross multiply
223,742.82x = 308,765.14 × 121,768.68 - Step 4: Simplify right side
223,742.82x = 37,597,923,527.82 - Step 5: Solve for x
x = 37,597,923,527.82/223,742.82 - Step 6: Final answer
x = 168,040.80
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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.