Finding the Fourth Proportional to 154,851.92, 213,711.84 and 86,887.26
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Solution
The fourth proportional to 154,851.92, 213,711.84 and 86,887.26 is: 119,913.50
Step by Step Solution
- Step 1: Write the proportion equation
154,851.92 : 213,711.84 = 86,887.26 : x - Step 2: Convert to fraction form
154,851.92/213,711.84 = 86,887.26/x - Step 3: Cross multiply
154,851.92x = 213,711.84 × 86,887.26 - Step 4: Simplify right side
154,851.92x = 18,568,836,207.16 - Step 5: Solve for x
x = 18,568,836,207.16/154,851.92 - Step 6: Final answer
x = 119,913.50
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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.