Finding the Fourth Proportional to 138.87, 191.49 and 97.41
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Solution
The fourth proportional to 138.87, 191.49 and 97.41 is: 134.32
Step by Step Solution
- Step 1: Write the proportion equation
138.87 : 191.49 = 97.41 : x - Step 2: Convert to fraction form
138.87/191.49 = 97.41/x - Step 3: Cross multiply
138.87x = 191.49 × 97.41 - Step 4: Simplify right side
138.87x = 18,652.08 - Step 5: Solve for x
x = 18,652.08/138.87 - Step 6: Final answer
x = 134.32
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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.