Finding the Fourth Proportional to 181,919.80, 272,879.70 and 128,775.70
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Solution
The fourth proportional to 181,919.80, 272,879.70 and 128,775.70 is: 193,163.55
Step by Step Solution
- Step 1: Write the proportion equation
181,919.80 : 272,879.70 = 128,775.70 : x - Step 2: Convert to fraction form
181,919.80/272,879.70 = 128,775.70/x - Step 3: Cross multiply
181,919.80x = 272,879.70 × 128,775.70 - Step 4: Simplify right side
181,919.80x = 35,140,274,383.29 - Step 5: Solve for x
x = 35,140,274,383.29/181,919.80 - Step 6: Final answer
x = 193,163.55
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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.