Finding the Fourth Proportional to 138,786,131.20, 208,029,897.60 and 52,491,193.60
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Solution
The fourth proportional to 138,786,131.20, 208,029,897.60 and 52,491,193.60 is: 78,680,322.99
Step by Step Solution
- Step 1: Write the proportion equation
138,786,131.20 : 208,029,897.60 = 52,491,193.60 : x - Step 2: Convert to fraction form
138,786,131.20/208,029,897.60 = 52,491,193.60/x - Step 3: Cross multiply
138,786,131.20x = 208,029,897.60 × 52,491,193.60 - Step 4: Simplify right side
138,786,131.20x = 10,919,737,629,509,776 - Step 5: Solve for x
x = 10,919,737,629,509,776/138,786,131.20 - Step 6: Final answer
x = 78,680,322.99
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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.