Finding the Fourth Proportional to 149,645.75, 206,512.34 and 81,663.26
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Solution
The fourth proportional to 149,645.75, 206,512.34 and 81,663.26 is: 112,695.95
Step by Step Solution
- Step 1: Write the proportion equation
149,645.75 : 206,512.34 = 81,663.26 : x - Step 2: Convert to fraction form
149,645.75/206,512.34 = 81,663.26/x - Step 3: Cross multiply
149,645.75x = 206,512.34 × 81,663.26 - Step 4: Simplify right side
149,645.75x = 16,864,469,473.75 - Step 5: Solve for x
x = 16,864,469,473.75/149,645.75 - Step 6: Final answer
x = 112,695.95
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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.