Finding the Fourth Proportional to 120,918.19, 166,872.75 and 67,204.09
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Solution
The fourth proportional to 120,918.19, 166,872.75 and 67,204.09 is: 92,744.78
Step by Step Solution
- Step 1: Write the proportion equation
120,918.19 : 166,872.75 = 67,204.09 : x - Step 2: Convert to fraction form
120,918.19/166,872.75 = 67,204.09/x - Step 3: Cross multiply
120,918.19x = 166,872.75 × 67,204.09 - Step 4: Simplify right side
120,918.19x = 11,214,531,309.55 - Step 5: Solve for x
x = 11,214,531,309.55/120,918.19 - Step 6: Final answer
x = 92,744.78
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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.