Finding the Fourth Proportional to 207,163.40, 310,915.20 and 107,354.12
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Solution
The fourth proportional to 207,163.40, 310,915.20 and 107,354.12 is: 161,119.33
Step by Step Solution
- Step 1: Write the proportion equation
207,163.40 : 310,915.20 = 107,354.12 : x - Step 2: Convert to fraction form
207,163.40/310,915.20 = 107,354.12/x - Step 3: Cross multiply
207,163.40x = 310,915.20 × 107,354.12 - Step 4: Simplify right side
207,163.40x = 33,378,027,690.62 - Step 5: Solve for x
x = 33,378,027,690.62/207,163.40 - Step 6: Final answer
x = 161,119.33
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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.