Finding the Fourth Proportional to 121,221.96, 167,286.36 and 67,517.28
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Solution
The fourth proportional to 121,221.96, 167,286.36 and 67,517.28 is: 93,173.88
Step by Step Solution
- Step 1: Write the proportion equation
121,221.96 : 167,286.36 = 67,517.28 : x - Step 2: Convert to fraction form
121,221.96/167,286.36 = 67,517.28/x - Step 3: Cross multiply
121,221.96x = 167,286.36 × 67,517.28 - Step 4: Simplify right side
121,221.96x = 11,294,720,008.30 - Step 5: Solve for x
x = 11,294,720,008.30/121,221.96 - Step 6: Final answer
x = 93,173.88
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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.