Finding the Fourth Proportional to 129,794,163.60, 194,691,245.40 and 78,733,837.20
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Solution
The fourth proportional to 129,794,163.60, 194,691,245.40 and 78,733,837.20 is: 118,100,755.80
Step by Step Solution
- Step 1: Write the proportion equation
129,794,163.60 : 194,691,245.40 = 78,733,837.20 : x - Step 2: Convert to fraction form
129,794,163.60/194,691,245.40 = 78,733,837.20/x - Step 3: Cross multiply
129,794,163.60x = 194,691,245.40 × 78,733,837.20 - Step 4: Simplify right side
129,794,163.60x = 15,328,788,819,588,850 - Step 5: Solve for x
x = 15,328,788,819,588,850/129,794,163.60 - Step 6: Final answer
x = 118,100,755.80
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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.