Finding the Fourth Proportional to 121,170.28, 167,354.94 and 80,813.92
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Solution
The fourth proportional to 121,170.28, 167,354.94 and 80,813.92 is: 111,616.55
Step by Step Solution
- Step 1: Write the proportion equation
121,170.28 : 167,354.94 = 80,813.92 : x - Step 2: Convert to fraction form
121,170.28/167,354.94 = 80,813.92/x - Step 3: Cross multiply
121,170.28x = 167,354.94 × 80,813.92 - Step 4: Simplify right side
121,170.28x = 13,524,608,732.76 - Step 5: Solve for x
x = 13,524,608,732.76/121,170.28 - Step 6: Final answer
x = 111,616.55
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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.