Finding the Fourth Proportional to 149,789.07, 206,709.29 and 81,806.58
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Solution
The fourth proportional to 149,789.07, 206,709.29 and 81,806.58 is: 112,893.28
Step by Step Solution
- Step 1: Write the proportion equation
149,789.07 : 206,709.29 = 81,806.58 : x - Step 2: Convert to fraction form
149,789.07/206,709.29 = 81,806.58/x - Step 3: Cross multiply
149,789.07x = 206,709.29 × 81,806.58 - Step 4: Simplify right side
149,789.07x = 16,910,180,069.13 - Step 5: Solve for x
x = 16,910,180,069.13/149,789.07 - Step 6: Final answer
x = 112,893.28
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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.