Finding the Fourth Proportional to 129,840.10, 194,723.70 and 41,120.80
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Solution
The fourth proportional to 129,840.10, 194,723.70 and 41,120.80 is: 61,669.66
Step by Step Solution
- Step 1: Write the proportion equation
129,840.10 : 194,723.70 = 41,120.80 : x - Step 2: Convert to fraction form
129,840.10/194,723.70 = 41,120.80/x - Step 3: Cross multiply
129,840.10x = 194,723.70 × 41,120.80 - Step 4: Simplify right side
129,840.10x = 8,007,194,322.96 - Step 5: Solve for x
x = 8,007,194,322.96/129,840.10 - Step 6: Final answer
x = 61,669.66
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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.