Finding the Fourth Proportional to 212,793.09, 319,265.84 and 91,162.59
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Solution
The fourth proportional to 212,793.09, 319,265.84 and 91,162.59 is: 136,776.53
Step by Step Solution
- Step 1: Write the proportion equation
212,793.09 : 319,265.84 = 91,162.59 : x - Step 2: Convert to fraction form
212,793.09/319,265.84 = 91,162.59/x - Step 3: Cross multiply
212,793.09x = 319,265.84 × 91,162.59 - Step 4: Simplify right side
212,793.09x = 29,105,100,872.93 - Step 5: Solve for x
x = 29,105,100,872.93/212,793.09 - Step 6: Final answer
x = 136,776.53
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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.