Finding the Fourth Proportional to 198,723.09, 274,156.97 and 112,663.92
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Solution
The fourth proportional to 198,723.09, 274,156.97 and 112,663.92 is: 155,430.34
Step by Step Solution
- Step 1: Write the proportion equation
198,723.09 : 274,156.97 = 112,663.92 : x - Step 2: Convert to fraction form
198,723.09/274,156.97 = 112,663.92/x - Step 3: Cross multiply
198,723.09x = 274,156.97 × 112,663.92 - Step 4: Simplify right side
198,723.09x = 30,887,598,372.20 - Step 5: Solve for x
x = 30,887,598,372.20/198,723.09 - Step 6: Final answer
x = 155,430.34
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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.