Finding the Fourth Proportional to 136,879.48, 205,249.11 and 72,873.99
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Solution
The fourth proportional to 136,879.48, 205,249.11 and 72,873.99 is: 109,273.66
Step by Step Solution
- Step 1: Write the proportion equation
136,879.48 : 205,249.11 = 72,873.99 : x - Step 2: Convert to fraction form
136,879.48/205,249.11 = 72,873.99/x - Step 3: Cross multiply
136,879.48x = 205,249.11 × 72,873.99 - Step 4: Simplify right side
136,879.48x = 14,957,321,589.65 - Step 5: Solve for x
x = 14,957,321,589.65/136,879.48 - Step 6: Final answer
x = 109,273.66
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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.