Finding the Fourth Proportional to 120,497.60, 166,286.70 and 66,786.08
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Solution
The fourth proportional to 120,497.60, 166,286.70 and 66,786.08 is: 92,164.80
Step by Step Solution
- Step 1: Write the proportion equation
120,497.60 : 166,286.70 = 66,786.08 : x - Step 2: Convert to fraction form
120,497.60/166,286.70 = 66,786.08/x - Step 3: Cross multiply
120,497.60x = 166,286.70 × 66,786.08 - Step 4: Simplify right side
120,497.60x = 11,105,636,849.14 - Step 5: Solve for x
x = 11,105,636,849.14/120,497.60 - Step 6: Final answer
x = 92,164.80
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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.