Finding the Fourth Proportional to 136,905,379.75, 188,994,571.44 and 91,719,929.26
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Solution
The fourth proportional to 136,905,379.75, 188,994,571.44 and 91,719,929.26 is: 126,617,147.95
Step by Step Solution
- Step 1: Write the proportion equation
136,905,379.75 : 188,994,571.44 = 91,719,929.26 : x - Step 2: Convert to fraction form
136,905,379.75/188,994,571.44 = 91,719,929.26/x - Step 3: Cross multiply
136,905,379.75x = 188,994,571.44 × 91,719,929.26 - Step 4: Simplify right side
136,905,379.75x = 17,334,568,722,757,628 - Step 5: Solve for x
x = 17,334,568,722,757,628/136,905,379.75 - Step 6: Final answer
x = 126,617,147.95
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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.