Finding the Fourth Proportional to 142,198.99, 212,671.05 and 126,514.09
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Solution
The fourth proportional to 142,198.99, 212,671.05 and 126,514.09 is: 189,212.91
Step by Step Solution
- Step 1: Write the proportion equation
142,198.99 : 212,671.05 = 126,514.09 : x - Step 2: Convert to fraction form
142,198.99/212,671.05 = 126,514.09/x - Step 3: Cross multiply
142,198.99x = 212,671.05 × 126,514.09 - Step 4: Simplify right side
142,198.99x = 26,905,884,360.09 - Step 5: Solve for x
x = 26,905,884,360.09/142,198.99 - Step 6: Final answer
x = 189,212.91
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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.