Finding the Fourth Proportional to 201,568.11, 278,070.93 and 129,971.13
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Solution
The fourth proportional to 201,568.11, 278,070.93 and 129,971.13 is: 179,300.15
Step by Step Solution
- Step 1: Write the proportion equation
201,568.11 : 278,070.93 = 129,971.13 : x - Step 2: Convert to fraction form
201,568.11/278,070.93 = 129,971.13/x - Step 3: Cross multiply
201,568.11x = 278,070.93 × 129,971.13 - Step 4: Simplify right side
201,568.11x = 36,141,192,992.25 - Step 5: Solve for x
x = 36,141,192,992.25/201,568.11 - Step 6: Final answer
x = 179,300.15
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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.