Finding the Fourth Proportional to 98,021.84, 146,771.64 and 66,917.84
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Solution
The fourth proportional to 98,021.84, 146,771.64 and 66,917.84 is: 100,198.50
Step by Step Solution
- Step 1: Write the proportion equation
98,021.84 : 146,771.64 = 66,917.84 : x - Step 2: Convert to fraction form
98,021.84/146,771.64 = 66,917.84/x - Step 3: Cross multiply
98,021.84x = 146,771.64 × 66,917.84 - Step 4: Simplify right side
98,021.84x = 9,821,641,122.06 - Step 5: Solve for x
x = 9,821,641,122.06/98,021.84 - Step 6: Final answer
x = 100,198.50
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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.