Finding the Fourth Proportional to 120,753.84, 166,644.92 and 66,310.55
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Solution
The fourth proportional to 120,753.84, 166,644.92 and 66,310.55 is: 91,511.09
Step by Step Solution
- Step 1: Write the proportion equation
120,753.84 : 166,644.92 = 66,310.55 : x - Step 2: Convert to fraction form
120,753.84/166,644.92 = 66,310.55/x - Step 3: Cross multiply
120,753.84x = 166,644.92 × 66,310.55 - Step 4: Simplify right side
120,753.84x = 11,050,315,632.46 - Step 5: Solve for x
x = 11,050,315,632.46/120,753.84 - Step 6: Final answer
x = 91,511.09
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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.