Finding the Fourth Proportional to 124,786.31, 172,205.09 and 68,197.68
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Solution
The fourth proportional to 124,786.31, 172,205.09 and 68,197.68 is: 94,112.79
Step by Step Solution
- Step 1: Write the proportion equation
124,786.31 : 172,205.09 = 68,197.68 : x - Step 2: Convert to fraction form
124,786.31/172,205.09 = 68,197.68/x - Step 3: Cross multiply
124,786.31x = 172,205.09 × 68,197.68 - Step 4: Simplify right side
124,786.31x = 11,743,987,536.94 - Step 5: Solve for x
x = 11,743,987,536.94/124,786.31 - Step 6: Final answer
x = 94,112.79
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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.