Finding the Fourth Proportional to 107,639.20, 161,343.60 and 48,464.80
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Solution
The fourth proportional to 107,639.20, 161,343.60 and 48,464.80 is: 72,645.33
Step by Step Solution
- Step 1: Write the proportion equation
107,639.20 : 161,343.60 = 48,464.80 : x - Step 2: Convert to fraction form
107,639.20/161,343.60 = 48,464.80/x - Step 3: Cross multiply
107,639.20x = 161,343.60 × 48,464.80 - Step 4: Simplify right side
107,639.20x = 7,819,485,305.28 - Step 5: Solve for x
x = 7,819,485,305.28/107,639.20 - Step 6: Final answer
x = 72,645.33
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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.