Finding the Fourth Proportional to 120,687.76, 166,549.08 and 66,972.79
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Solution
The fourth proportional to 120,687.76, 166,549.08 and 66,972.79 is: 92,422.43
Step by Step Solution
- Step 1: Write the proportion equation
120,687.76 : 166,549.08 = 66,972.79 : x - Step 2: Convert to fraction form
120,687.76/166,549.08 = 66,972.79/x - Step 3: Cross multiply
120,687.76x = 166,549.08 × 66,972.79 - Step 4: Simplify right side
120,687.76x = 11,154,256,559.53 - Step 5: Solve for x
x = 11,154,256,559.53/120,687.76 - Step 6: Final answer
x = 92,422.43
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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.