Finding the Fourth Proportional to 121,910.85, 168,229.02 and 68,186.55
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Solution
The fourth proportional to 121,910.85, 168,229.02 and 68,186.55 is: 94,092.99
Step by Step Solution
- Step 1: Write the proportion equation
121,910.85 : 168,229.02 = 68,186.55 : x - Step 2: Convert to fraction form
121,910.85/168,229.02 = 68,186.55/x - Step 3: Cross multiply
121,910.85x = 168,229.02 × 68,186.55 - Step 4: Simplify right side
121,910.85x = 11,470,956,483.68 - Step 5: Solve for x
x = 11,470,956,483.68/121,910.85 - Step 6: Final answer
x = 94,092.99
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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.