Finding the Fourth Proportional to 198,418.79, 273,820.14 and 116,765.09
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Solution
The fourth proportional to 198,418.79, 273,820.14 and 116,765.09 is: 161,137.12
Step by Step Solution
- Step 1: Write the proportion equation
198,418.79 : 273,820.14 = 116,765.09 : x - Step 2: Convert to fraction form
198,418.79/273,820.14 = 116,765.09/x - Step 3: Cross multiply
198,418.79x = 273,820.14 × 116,765.09 - Step 4: Simplify right side
198,418.79x = 31,972,633,290.91 - Step 5: Solve for x
x = 31,972,633,290.91/198,418.79 - Step 6: Final answer
x = 161,137.12
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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.