Finding the Fourth Proportional to 189,163.62, 261,048.69 and 103,122.65
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Solution
The fourth proportional to 189,163.62, 261,048.69 and 103,122.65 is: 142,310.84
Step by Step Solution
- Step 1: Write the proportion equation
189,163.62 : 261,048.69 = 103,122.65 : x - Step 2: Convert to fraction form
189,163.62/261,048.69 = 103,122.65/x - Step 3: Cross multiply
189,163.62x = 261,048.69 × 103,122.65 - Step 4: Simplify right side
189,163.62x = 26,920,033,344.45 - Step 5: Solve for x
x = 26,920,033,344.45/189,163.62 - Step 6: Final answer
x = 142,310.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.