Finding the Fourth Proportional to 206,928.99, 285,561.72 and 120,947.09
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Solution
The fourth proportional to 206,928.99, 285,561.72 and 120,947.09 is: 166,906.81
Step by Step Solution
- Step 1: Write the proportion equation
206,928.99 : 285,561.72 = 120,947.09 : x - Step 2: Convert to fraction form
206,928.99/285,561.72 = 120,947.09/x - Step 3: Cross multiply
206,928.99x = 285,561.72 × 120,947.09 - Step 4: Simplify right side
206,928.99x = 34,537,857,621.59 - Step 5: Solve for x
x = 34,537,857,621.59/206,928.99 - Step 6: Final answer
x = 166,906.81
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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.