Finding the Fourth Proportional to 189,358.43, 261,249.98 and 107,678.57
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Solution
The fourth proportional to 189,358.43, 261,249.98 and 107,678.57 is: 148,559.66
Step by Step Solution
- Step 1: Write the proportion equation
189,358.43 : 261,249.98 = 107,678.57 : x - Step 2: Convert to fraction form
189,358.43/261,249.98 = 107,678.57/x - Step 3: Cross multiply
189,358.43x = 261,249.98 × 107,678.57 - Step 4: Simplify right side
189,358.43x = 28,131,022,414.29 - Step 5: Solve for x
x = 28,131,022,414.29/189,358.43 - Step 6: Final answer
x = 148,559.66
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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.