Finding the Fourth Proportional to 138,960.67, 207,942.75 and 120,304.90
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Solution
The fourth proportional to 138,960.67, 207,942.75 and 120,304.90 is: 180,025.99
Step by Step Solution
- Step 1: Write the proportion equation
138,960.67 : 207,942.75 = 120,304.90 : x - Step 2: Convert to fraction form
138,960.67/207,942.75 = 120,304.90/x - Step 3: Cross multiply
138,960.67x = 207,942.75 × 120,304.90 - Step 4: Simplify right side
138,960.67x = 25,016,531,744.48 - Step 5: Solve for x
x = 25,016,531,744.48/138,960.67 - Step 6: Final answer
x = 180,025.99
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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.