Finding the Fourth Proportional to 136,431.64, 186,912.26 and 131,318.13
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Solution
The fourth proportional to 136,431.64, 186,912.26 and 131,318.13 is: 179,906.72
Step by Step Solution
- Step 1: Write the proportion equation
136,431.64 : 186,912.26 = 131,318.13 : x - Step 2: Convert to fraction form
136,431.64/186,912.26 = 131,318.13/x - Step 3: Cross multiply
136,431.64x = 186,912.26 × 131,318.13 - Step 4: Simplify right side
136,431.64x = 24,544,968,994.05 - Step 5: Solve for x
x = 24,544,968,994.05/136,431.64 - Step 6: Final answer
x = 179,906.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.