Finding the Fourth Proportional to 128,224.80, 192,337.20 and 126,475.20
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Solution
The fourth proportional to 128,224.80, 192,337.20 and 126,475.20 is: 189,712.80
Step by Step Solution
- Step 1: Write the proportion equation
128,224.80 : 192,337.20 = 126,475.20 : x - Step 2: Convert to fraction form
128,224.80/192,337.20 = 126,475.20/x - Step 3: Cross multiply
128,224.80x = 192,337.20 × 126,475.20 - Step 4: Simplify right side
128,224.80x = 24,325,885,837.44 - Step 5: Solve for x
x = 24,325,885,837.44/128,224.80 - Step 6: Final answer
x = 189,712.80
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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.