Finding the Fourth Proportional to 121,922.13, 182,717.14 and 68,639.52
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Solution
The fourth proportional to 121,922.13, 182,717.14 and 68,639.52 is: 102,865.79
Step by Step Solution
- Step 1: Write the proportion equation
121,922.13 : 182,717.14 = 68,639.52 : x - Step 2: Convert to fraction form
121,922.13/182,717.14 = 68,639.52/x - Step 3: Cross multiply
121,922.13x = 182,717.14 × 68,639.52 - Step 4: Simplify right side
121,922.13x = 12,541,616,785.37 - Step 5: Solve for x
x = 12,541,616,785.37/121,922.13 - Step 6: Final answer
x = 102,865.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.