Finding the Fourth Proportional to 68,133.74, 102,205.70 and 18,212.69
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Solution
The fourth proportional to 68,133.74, 102,205.70 and 18,212.69 is: 27,320.39
Step by Step Solution
- Step 1: Write the proportion equation
68,133.74 : 102,205.70 = 18,212.69 : x - Step 2: Convert to fraction form
68,133.74/102,205.70 = 18,212.69/x - Step 3: Cross multiply
68,133.74x = 102,205.70 × 18,212.69 - Step 4: Simplify right side
68,133.74x = 1,861,440,128.24 - Step 5: Solve for x
x = 1,861,440,128.24/68,133.74 - Step 6: Final answer
x = 27,320.39
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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.