Finding the Fourth Proportional to 120,268.62, 180,399.21 and 57,134.19
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Solution
The fourth proportional to 120,268.62, 180,399.21 and 57,134.19 is: 85,699.52
Step by Step Solution
- Step 1: Write the proportion equation
120,268.62 : 180,399.21 = 57,134.19 : x - Step 2: Convert to fraction form
120,268.62/180,399.21 = 57,134.19/x - Step 3: Cross multiply
120,268.62x = 180,399.21 × 57,134.19 - Step 4: Simplify right side
120,268.62x = 10,306,962,739.99 - Step 5: Solve for x
x = 10,306,962,739.99/120,268.62 - Step 6: Final answer
x = 85,699.52
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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.