Finding the Fourth Proportional to 107.73, 161.34 and 67.09
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Solution
The fourth proportional to 107.73, 161.34 and 67.09 is: 100.48
Step by Step Solution
- Step 1: Write the proportion equation
107.73 : 161.34 = 67.09 : x - Step 2: Convert to fraction form
107.73/161.34 = 67.09/x - Step 3: Cross multiply
107.73x = 161.34 × 67.09 - Step 4: Simplify right side
107.73x = 10,824.30 - Step 5: Solve for x
x = 10,824.30/107.73 - Step 6: Final answer
x = 100.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.