Finding the Fourth Proportional to 143,990.82, 198,704.97 and 80,335.62
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Solution
The fourth proportional to 143,990.82, 198,704.97 and 80,335.62 is: 110,861.84
Step by Step Solution
- Step 1: Write the proportion equation
143,990.82 : 198,704.97 = 80,335.62 : x - Step 2: Convert to fraction form
143,990.82/198,704.97 = 80,335.62/x - Step 3: Cross multiply
143,990.82x = 198,704.97 × 80,335.62 - Step 4: Simplify right side
143,990.82x = 15,963,086,962.03 - Step 5: Solve for x
x = 15,963,086,962.03/143,990.82 - Step 6: Final answer
x = 110,861.84
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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.