Finding the Fourth Proportional to 141,972.75, 212,896.76 and 53,163.97
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Solution
The fourth proportional to 141,972.75, 212,896.76 and 53,163.97 is: 79,722.60
Step by Step Solution
- Step 1: Write the proportion equation
141,972.75 : 212,896.76 = 53,163.97 : x - Step 2: Convert to fraction form
141,972.75/212,896.76 = 53,163.97/x - Step 3: Cross multiply
141,972.75x = 212,896.76 × 53,163.97 - Step 4: Simplify right side
141,972.75x = 11,318,436,163.68 - Step 5: Solve for x
x = 11,318,436,163.68/141,972.75 - Step 6: Final answer
x = 79,722.60
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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.