Finding the Fourth Proportional to 129,490,129.20, 194,235,193.80 and 123,518,161.20
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Solution
The fourth proportional to 129,490,129.20, 194,235,193.80 and 123,518,161.20 is: 185,277,241.80
Step by Step Solution
- Step 1: Write the proportion equation
129,490,129.20 : 194,235,193.80 = 123,518,161.20 : x - Step 2: Convert to fraction form
129,490,129.20/194,235,193.80 = 123,518,161.20/x - Step 3: Cross multiply
129,490,129.20x = 194,235,193.80 × 123,518,161.20 - Step 4: Simplify right side
129,490,129.20x = 23,991,573,978,501,644 - Step 5: Solve for x
x = 23,991,573,978,501,644/129,490,129.20 - Step 6: Final answer
x = 185,277,241.80
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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.