Finding the Fourth Proportional to 108,631.98, 149,912.10 and 66,190.68
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Solution
The fourth proportional to 108,631.98, 149,912.10 and 66,190.68 is: 91,343.12
Step by Step Solution
- Step 1: Write the proportion equation
108,631.98 : 149,912.10 = 66,190.68 : x - Step 2: Convert to fraction form
108,631.98/149,912.10 = 66,190.68/x - Step 3: Cross multiply
108,631.98x = 149,912.10 × 66,190.68 - Step 4: Simplify right side
108,631.98x = 9,922,783,839.23 - Step 5: Solve for x
x = 9,922,783,839.23/108,631.98 - Step 6: Final answer
x = 91,343.12
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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.