Finding the Fourth Proportional to 129,412.24, 194,135.44 and 45,173.92
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Solution
The fourth proportional to 129,412.24, 194,135.44 and 45,173.92 is: 67,766.84
Step by Step Solution
- Step 1: Write the proportion equation
129,412.24 : 194,135.44 = 45,173.92 : x - Step 2: Convert to fraction form
129,412.24/194,135.44 = 45,173.92/x - Step 3: Cross multiply
129,412.24x = 194,135.44 × 45,173.92 - Step 4: Simplify right side
129,412.24x = 8,769,858,835.72 - Step 5: Solve for x
x = 8,769,858,835.72/129,412.24 - Step 6: Final answer
x = 67,766.84
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1.5x scale
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.