Finding the Fourth Proportional to 128,244.36, 193,241.91 and 105,382.92
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Solution
The fourth proportional to 128,244.36, 193,241.91 and 105,382.92 is: 158,793.70
Step by Step Solution
- Step 1: Write the proportion equation
128,244.36 : 193,241.91 = 105,382.92 : x - Step 2: Convert to fraction form
128,244.36/193,241.91 = 105,382.92/x - Step 3: Cross multiply
128,244.36x = 193,241.91 × 105,382.92 - Step 4: Simplify right side
128,244.36x = 20,364,396,742.18 - Step 5: Solve for x
x = 20,364,396,742.18/128,244.36 - Step 6: Final answer
x = 158,793.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.