Finding the Fourth Proportional to 84,821.80, 127,232.70 and 84,238.60
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Solution
The fourth proportional to 84,821.80, 127,232.70 and 84,238.60 is: 126,357.90
Step by Step Solution
- Step 1: Write the proportion equation
84,821.80 : 127,232.70 = 84,238.60 : x - Step 2: Convert to fraction form
84,821.80/127,232.70 = 84,238.60/x - Step 3: Cross multiply
84,821.80x = 127,232.70 × 84,238.60 - Step 4: Simplify right side
84,821.80x = 10,717,904,522.22 - Step 5: Solve for x
x = 10,717,904,522.22/84,821.80 - Step 6: Final answer
x = 126,357.90
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1.5x scale
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.