Finding the Fourth Proportional to 145,313.43, 218,034.81 and 74,198.49
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Solution
The fourth proportional to 145,313.43, 218,034.81 and 74,198.49 is: 111,330.75
Step by Step Solution
- Step 1: Write the proportion equation
145,313.43 : 218,034.81 = 74,198.49 : x - Step 2: Convert to fraction form
145,313.43/218,034.81 = 74,198.49/x - Step 3: Cross multiply
145,313.43x = 218,034.81 × 74,198.49 - Step 4: Simplify right side
145,313.43x = 16,177,853,669.44 - Step 5: Solve for x
x = 16,177,853,669.44/145,313.43 - Step 6: Final answer
x = 111,330.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.