Finding the Fourth Proportional to 121,638.92, 167,861.36 and 67,923.97
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Solution
The fourth proportional to 121,638.92, 167,861.36 and 67,923.97 is: 93,734.89
Step by Step Solution
- Step 1: Write the proportion equation
121,638.92 : 167,861.36 = 67,923.97 : x - Step 2: Convert to fraction form
121,638.92/167,861.36 = 67,923.97/x - Step 3: Cross multiply
121,638.92x = 167,861.36 × 67,923.97 - Step 4: Simplify right side
121,638.92x = 11,401,809,730.96 - Step 5: Solve for x
x = 11,401,809,730.96/121,638.92 - Step 6: Final answer
x = 93,734.89
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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.