Finding the Fourth Proportional to 102,512.05, 141,340.94 and 84,299.12
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Solution
The fourth proportional to 102,512.05, 141,340.94 and 84,299.12 is: 116,229.43
Step by Step Solution
- Step 1: Write the proportion equation
102,512.05 : 141,340.94 = 84,299.12 : x - Step 2: Convert to fraction form
102,512.05/141,340.94 = 84,299.12/x - Step 3: Cross multiply
102,512.05x = 141,340.94 × 84,299.12 - Step 4: Simplify right side
102,512.05x = 11,914,916,793.83 - Step 5: Solve for x
x = 11,914,916,793.83/102,512.05 - Step 6: Final answer
x = 116,229.43
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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.