Finding the Fourth Proportional to 158,207,183.79, 218,325,882.11 and 87,647,379.09
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Solution
The fourth proportional to 158,207,183.79, 218,325,882.11 and 87,647,379.09 is: 120,953,365.68
Step by Step Solution
- Step 1: Write the proportion equation
158,207,183.79 : 218,325,882.11 = 87,647,379.09 : x - Step 2: Convert to fraction form
158,207,183.79/218,325,882.11 = 87,647,379.09/x - Step 3: Cross multiply
158,207,183.79x = 218,325,882.11 × 87,647,379.09 - Step 4: Simplify right side
158,207,183.79x = 19,135,691,354,015,584 - Step 5: Solve for x
x = 19,135,691,354,015,584/158,207,183.79 - Step 6: Final answer
x = 120,953,365.68
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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.