Finding the Fourth Proportional to 198,642.18, 274,129.20 and 107,997.96
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Solution
The fourth proportional to 198,642.18, 274,129.20 and 107,997.96 is: 149,038.81
Step by Step Solution
- Step 1: Write the proportion equation
198,642.18 : 274,129.20 = 107,997.96 : x - Step 2: Convert to fraction form
198,642.18/274,129.20 = 107,997.96/x - Step 3: Cross multiply
198,642.18x = 274,129.20 × 107,997.96 - Step 4: Simplify right side
198,642.18x = 29,605,394,376.43 - Step 5: Solve for x
x = 29,605,394,376.43/198,642.18 - Step 6: Final answer
x = 149,038.81
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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.