Finding the Fourth Proportional to 149,449.09, 206,236.44 and 81,463.48
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Solution
The fourth proportional to 149,449.09, 206,236.44 and 81,463.48 is: 112,417.80
Step by Step Solution
- Step 1: Write the proportion equation
149,449.09 : 206,236.44 = 81,463.48 : x - Step 2: Convert to fraction form
149,449.09/206,236.44 = 81,463.48/x - Step 3: Cross multiply
149,449.09x = 206,236.44 × 81,463.48 - Step 4: Simplify right side
149,449.09x = 16,800,738,105.21 - Step 5: Solve for x
x = 16,800,738,105.21/149,449.09 - Step 6: Final answer
x = 112,417.80
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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.