Finding the Fourth Proportional to 138.26, 192.08 and 136.99
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Solution
The fourth proportional to 138.26, 192.08 and 136.99 is: 190.31
Step by Step Solution
- Step 1: Write the proportion equation
138.26 : 192.08 = 136.99 : x - Step 2: Convert to fraction form
138.26/192.08 = 136.99/x - Step 3: Cross multiply
138.26x = 192.08 × 136.99 - Step 4: Simplify right side
138.26x = 26,311.87 - Step 5: Solve for x
x = 26,311.87/138.26 - Step 6: Final answer
x = 190.31
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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.