Finding the Fourth Proportional to 128,549.13, 192,823.69 and 54,677.13
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Solution
The fourth proportional to 128,549.13, 192,823.69 and 54,677.13 is: 82,015.69
Step by Step Solution
- Step 1: Write the proportion equation
128,549.13 : 192,823.69 = 54,677.13 : x - Step 2: Convert to fraction form
128,549.13/192,823.69 = 54,677.13/x - Step 3: Cross multiply
128,549.13x = 192,823.69 × 54,677.13 - Step 4: Simplify right side
128,549.13x = 10,543,045,965.21 - Step 5: Solve for x
x = 10,543,045,965.21/128,549.13 - Step 6: Final answer
x = 82,015.69
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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.