Finding the Fourth Proportional to 115,213.80, 172,820.70 and 32,107.80
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Solution
The fourth proportional to 115,213.80, 172,820.70 and 32,107.80 is: 48,161.70
Step by Step Solution
- Step 1: Write the proportion equation
115,213.80 : 172,820.70 = 32,107.80 : x - Step 2: Convert to fraction form
115,213.80/172,820.70 = 32,107.80/x - Step 3: Cross multiply
115,213.80x = 172,820.70 × 32,107.80 - Step 4: Simplify right side
115,213.80x = 5,548,892,471.46 - Step 5: Solve for x
x = 5,548,892,471.46/115,213.80 - Step 6: Final answer
x = 48,161.70
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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.