Finding the Fourth Proportional to 196,863.81, 271,577.57 and 128,850.84
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Solution
The fourth proportional to 196,863.81, 271,577.57 and 128,850.84 is: 177,752.32
Step by Step Solution
- Step 1: Write the proportion equation
196,863.81 : 271,577.57 = 128,850.84 : x - Step 2: Convert to fraction form
196,863.81/271,577.57 = 128,850.84/x - Step 3: Cross multiply
196,863.81x = 271,577.57 × 128,850.84 - Step 4: Simplify right side
196,863.81x = 34,992,998,019.66 - Step 5: Solve for x
x = 34,992,998,019.66/196,863.81 - Step 6: Final answer
x = 177,752.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.