Finding the Fourth Proportional to 121,107.20, 181,660.80 and 110,220.80
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Solution
The fourth proportional to 121,107.20, 181,660.80 and 110,220.80 is: 165,331.20
Step by Step Solution
- Step 1: Write the proportion equation
121,107.20 : 181,660.80 = 110,220.80 : x - Step 2: Convert to fraction form
121,107.20/181,660.80 = 110,220.80/x - Step 3: Cross multiply
121,107.20x = 181,660.80 × 110,220.80 - Step 4: Simplify right side
121,107.20x = 20,022,798,704.64 - Step 5: Solve for x
x = 20,022,798,704.64/121,107.20 - Step 6: Final answer
x = 165,331.20
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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.