Finding the Fourth Proportional to 143,576.06, 198,136.84 and 79,052.80
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Solution
The fourth proportional to 143,576.06, 198,136.84 and 79,052.80 is: 109,093.90
Step by Step Solution
- Step 1: Write the proportion equation
143,576.06 : 198,136.84 = 79,052.80 : x - Step 2: Convert to fraction form
143,576.06/198,136.84 = 79,052.80/x - Step 3: Cross multiply
143,576.06x = 198,136.84 × 79,052.80 - Step 4: Simplify right side
143,576.06x = 15,663,271,985.15 - Step 5: Solve for x
x = 15,663,271,985.15/143,576.06 - Step 6: Final answer
x = 109,093.90
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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.