Finding the Third Proportional to 84,138.75 and 178,665.75
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Solution
The third proportional to 84,138.75 and 178,665.75 is: 379,390.59
Step by Step Solution
- Step 1: Write the proportion equation
84,138.75 : 178,665.75 = 178,665.75 : x - Step 2: Convert to fraction form
84,138.75/178,665.75 = 178,665.75/x - Step 3: Cross multiply
84,138.75x = 178,665.75 × 178,665.75 - Step 4: Simplify right side
84,138.75x = 31,921,450,223.06 - Step 5: Solve for x
x = 31,921,450,223.06/84,138.75 - Step 6: Final answer
x = 379,390.59
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Why These Related Problems?
These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.