Finding the Fourth Proportional to 12,134,855.30, 18,178,663.35 and 7,328,266.70
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Solution
The fourth proportional to 12,134,855.30, 18,178,663.35 and 7,328,266.70 is: 10,978,136.12
Step by Step Solution
- Step 1: Write the proportion equation
12,134,855.30 : 18,178,663.35 = 7,328,266.70 : x - Step 2: Convert to fraction form
12,134,855.30/18,178,663.35 = 7,328,266.70/x - Step 3: Cross multiply
12,134,855.30x = 18,178,663.35 × 7,328,266.70 - Step 4: Simplify right side
12,134,855.30x = 133,218,093,278,315.45 - Step 5: Solve for x
x = 133,218,093,278,315.45/12,134,855.30 - Step 6: Final answer
x = 10,978,136.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.