Finding the Fourth Proportional to 144,490,310.70, 199,396,757.36 and 78,410,809.14
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Solution
The fourth proportional to 144,490,310.70, 199,396,757.36 and 78,410,809.14 is: 108,206,986.39
Step by Step Solution
- Step 1: Write the proportion equation
144,490,310.70 : 199,396,757.36 = 78,410,809.14 : x - Step 2: Convert to fraction form
144,490,310.70/199,396,757.36 = 78,410,809.14/x - Step 3: Cross multiply
144,490,310.70x = 199,396,757.36 × 78,410,809.14 - Step 4: Simplify right side
144,490,310.70x = 15,634,861,083,100,812 - Step 5: Solve for x
x = 15,634,861,083,100,812/144,490,310.70 - Step 6: Final answer
x = 108,206,986.39
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1.5x scale
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.