Finding the Fourth Proportional to 120,639.99, 180,930.81 and 50,571.75
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Solution
The fourth proportional to 120,639.99, 180,930.81 and 50,571.75 is: 75,845.39
Step by Step Solution
- Step 1: Write the proportion equation
120,639.99 : 180,930.81 = 50,571.75 : x - Step 2: Convert to fraction form
120,639.99/180,930.81 = 50,571.75/x - Step 3: Cross multiply
120,639.99x = 180,930.81 × 50,571.75 - Step 4: Simplify right side
120,639.99x = 9,149,987,690.62 - Step 5: Solve for x
x = 9,149,987,690.62/120,639.99 - Step 6: Final answer
x = 75,845.39
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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.