Finding the Fourth Proportional to 124,791.38, 172,212.09 and 68,202.75
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Solution
The fourth proportional to 124,791.38, 172,212.09 and 68,202.75 is: 94,119.79
Step by Step Solution
- Step 1: Write the proportion equation
124,791.38 : 172,212.09 = 68,202.75 : x - Step 2: Convert to fraction form
124,791.38/172,212.09 = 68,202.75/x - Step 3: Cross multiply
124,791.38x = 172,212.09 × 68,202.75 - Step 4: Simplify right side
124,791.38x = 11,745,338,121.25 - Step 5: Solve for x
x = 11,745,338,121.25/124,791.38 - Step 6: Final answer
x = 94,119.79
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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.