Finding the Fourth Proportional to 143,761.26, 198,391.90 and 79,232.84
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Solution
The fourth proportional to 143,761.26, 198,391.90 and 79,232.84 is: 109,342.07
Step by Step Solution
- Step 1: Write the proportion equation
143,761.26 : 198,391.90 = 79,232.84 : x - Step 2: Convert to fraction form
143,761.26/198,391.90 = 79,232.84/x - Step 3: Cross multiply
143,761.26x = 198,391.90 × 79,232.84 - Step 4: Simplify right side
143,761.26x = 15,719,153,670.00 - Step 5: Solve for x
x = 15,719,153,670.00/143,761.26 - Step 6: Final answer
x = 109,342.07
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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.