Finding the Fourth Proportional to 128,493.20, 192,739.80 and 34,998.80
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Solution
The fourth proportional to 128,493.20, 192,739.80 and 34,998.80 is: 52,498.20
Step by Step Solution
- Step 1: Write the proportion equation
128,493.20 : 192,739.80 = 34,998.80 : x - Step 2: Convert to fraction form
128,493.20/192,739.80 = 34,998.80/x - Step 3: Cross multiply
128,493.20x = 192,739.80 × 34,998.80 - Step 4: Simplify right side
128,493.20x = 6,745,661,712.24 - Step 5: Solve for x
x = 6,745,661,712.24/128,493.20 - Step 6: Final answer
x = 52,498.20
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Similar ratio
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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.