Finding the Fourth Proportional to 201,863.75, 278,571.98 and 112,439.75
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Solution
The fourth proportional to 201,863.75, 278,571.98 and 112,439.75 is: 155,166.86
Step by Step Solution
- Step 1: Write the proportion equation
201,863.75 : 278,571.98 = 112,439.75 : x - Step 2: Convert to fraction form
201,863.75/278,571.98 = 112,439.75/x - Step 3: Cross multiply
201,863.75x = 278,571.98 × 112,439.75 - Step 4: Simplify right side
201,863.75x = 31,322,563,788.21 - Step 5: Solve for x
x = 31,322,563,788.21/201,863.75 - Step 6: Final answer
x = 155,166.86
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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.