Finding the Fourth Proportional to 138,163.70, 207,245.55 and 138,163.70
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Solution
The fourth proportional to 138,163.70, 207,245.55 and 138,163.70 is: 207,245.55
Step by Step Solution
- Step 1: Write the proportion equation
138,163.70 : 207,245.55 = 138,163.70 : x - Step 2: Convert to fraction form
138,163.70/207,245.55 = 138,163.70/x - Step 3: Cross multiply
138,163.70x = 207,245.55 × 138,163.70 - Step 4: Simplify right side
138,163.70x = 28,633,811,996.54 - Step 5: Solve for x
x = 28,633,811,996.54/138,163.70 - Step 6: Final answer
x = 207,245.55
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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.