Finding the Fourth Proportional to 128,548.44, 192,841.02 and 39,808.80
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Solution
The fourth proportional to 128,548.44, 192,841.02 and 39,808.80 is: 59,718.89
Step by Step Solution
- Step 1: Write the proportion equation
128,548.44 : 192,841.02 = 39,808.80 : x - Step 2: Convert to fraction form
128,548.44/192,841.02 = 39,808.80/x - Step 3: Cross multiply
128,548.44x = 192,841.02 × 39,808.80 - Step 4: Simplify right side
128,548.44x = 7,676,769,596.98 - Step 5: Solve for x
x = 7,676,769,596.98/128,548.44 - Step 6: Final answer
x = 59,718.89
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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.