Finding the Fourth Proportional to 121,761.83, 168,034.94 and 68,046.99
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Solution
The fourth proportional to 121,761.83, 168,034.94 and 68,046.99 is: 93,906.87
Step by Step Solution
- Step 1: Write the proportion equation
121,761.83 : 168,034.94 = 68,046.99 : x - Step 2: Convert to fraction form
121,761.83/168,034.94 = 68,046.99/x - Step 3: Cross multiply
121,761.83x = 168,034.94 × 68,046.99 - Step 4: Simplify right side
121,761.83x = 11,434,271,541.60 - Step 5: Solve for x
x = 11,434,271,541.60/121,761.83 - Step 6: Final answer
x = 93,906.87
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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.