Finding the Fourth Proportional to 189,543.09, 261,356.22 and 154,979.99
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Solution
The fourth proportional to 189,543.09, 261,356.22 and 154,979.99 is: 213,698.03
Step by Step Solution
- Step 1: Write the proportion equation
189,543.09 : 261,356.22 = 154,979.99 : x - Step 2: Convert to fraction form
189,543.09/261,356.22 = 154,979.99/x - Step 3: Cross multiply
189,543.09x = 261,356.22 × 154,979.99 - Step 4: Simplify right side
189,543.09x = 40,504,984,362.04 - Step 5: Solve for x
x = 40,504,984,362.04/189,543.09 - Step 6: Final answer
x = 213,698.03
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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.