Finding the Third Proportional to 138,631.50 and 207,639.70
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Solution
The third proportional to 138,631.50 and 207,639.70 is: 310,998.92
Step by Step Solution
- Step 1: Write the proportion equation
138,631.50 : 207,639.70 = 207,639.70 : x - Step 2: Convert to fraction form
138,631.50/207,639.70 = 207,639.70/x - Step 3: Cross multiply
138,631.50x = 207,639.70 × 207,639.70 - Step 4: Simplify right side
138,631.50x = 43,114,246,313.84 - Step 5: Solve for x
x = 43,114,246,313.84/138,631.50 - Step 6: Final answer
x = 310,998.92
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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.