Finding the Fourth Proportional to 201,859.68, 278,578.80 and 112,435.68
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Solution
The fourth proportional to 201,859.68, 278,578.80 and 112,435.68 is: 155,168.17
Step by Step Solution
- Step 1: Write the proportion equation
201,859.68 : 278,578.80 = 112,435.68 : x - Step 2: Convert to fraction form
201,859.68/278,578.80 = 112,435.68/x - Step 3: Cross multiply
201,859.68x = 278,578.80 × 112,435.68 - Step 4: Simplify right side
201,859.68x = 31,322,196,811.58 - Step 5: Solve for x
x = 31,322,196,811.58/201,859.68 - Step 6: Final answer
x = 155,168.17
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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.