Finding the Fourth Proportional to 120,819.45, 166,728.68 and 67,103.99
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Solution
The fourth proportional to 120,819.45, 166,728.68 and 67,103.99 is: 92,602.31
Step by Step Solution
- Step 1: Write the proportion equation
120,819.45 : 166,728.68 = 67,103.99 : x - Step 2: Convert to fraction form
120,819.45/166,728.68 = 67,103.99/x - Step 3: Cross multiply
120,819.45x = 166,728.68 × 67,103.99 - Step 4: Simplify right side
120,819.45x = 11,188,160,320.99 - Step 5: Solve for x
x = 11,188,160,320.99/120,819.45 - Step 6: Final answer
x = 92,602.31
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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.