Finding the Fourth Proportional to 126,027.20, 188,822.10 and 81,631.10
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Solution
The fourth proportional to 126,027.20, 188,822.10 and 81,631.10 is: 122,304.99
Step by Step Solution
- Step 1: Write the proportion equation
126,027.20 : 188,822.10 = 81,631.10 : x - Step 2: Convert to fraction form
126,027.20/188,822.10 = 81,631.10/x - Step 3: Cross multiply
126,027.20x = 188,822.10 × 81,631.10 - Step 4: Simplify right side
126,027.20x = 15,413,755,727.31 - Step 5: Solve for x
x = 15,413,755,727.31/126,027.20 - Step 6: Final answer
x = 122,304.99
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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.