Finding the Fourth Proportional to 120,760.20, 181,313.10 and 68,272.20
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Solution
The fourth proportional to 120,760.20, 181,313.10 and 68,272.20 is: 102,505.99
Step by Step Solution
- Step 1: Write the proportion equation
120,760.20 : 181,313.10 = 68,272.20 : x - Step 2: Convert to fraction form
120,760.20/181,313.10 = 68,272.20/x - Step 3: Cross multiply
120,760.20x = 181,313.10 × 68,272.20 - Step 4: Simplify right side
120,760.20x = 12,378,644,225.82 - Step 5: Solve for x
x = 12,378,644,225.82/120,760.20 - Step 6: Final answer
x = 102,505.99
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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.