Finding the Fourth Proportional to 138,163.62, 207,245.41 and 38,323.82
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Solution
The fourth proportional to 138,163.62, 207,245.41 and 38,323.82 is: 57,485.72
Step by Step Solution
- Step 1: Write the proportion equation
138,163.62 : 207,245.41 = 38,323.82 : x - Step 2: Convert to fraction form
138,163.62/207,245.41 = 38,323.82/x - Step 3: Cross multiply
138,163.62x = 207,245.41 × 38,323.82 - Step 4: Simplify right side
138,163.62x = 7,942,434,752.44 - Step 5: Solve for x
x = 7,942,434,752.44/138,163.62 - Step 6: Final answer
x = 57,485.72
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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.