Finding the Fourth Proportional to 140,874.74, 211,245.21 and 81,728.54
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Solution
The fourth proportional to 140,874.74, 211,245.21 and 81,728.54 is: 122,553.99
Step by Step Solution
- Step 1: Write the proportion equation
140,874.74 : 211,245.21 = 81,728.54 : x - Step 2: Convert to fraction form
140,874.74/211,245.21 = 81,728.54/x - Step 3: Cross multiply
140,874.74x = 211,245.21 × 81,728.54 - Step 4: Simplify right side
140,874.74x = 17,264,761,539.07 - Step 5: Solve for x
x = 17,264,761,539.07/140,874.74 - Step 6: Final answer
x = 122,553.99
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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.