Finding the Fourth Proportional to 126,857.73, 189,355.46 and 111,909.99
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Solution
The fourth proportional to 126,857.73, 189,355.46 and 111,909.99 is: 167,043.56
Step by Step Solution
- Step 1: Write the proportion equation
126,857.73 : 189,355.46 = 111,909.99 : x - Step 2: Convert to fraction form
126,857.73/189,355.46 = 111,909.99/x - Step 3: Cross multiply
126,857.73x = 189,355.46 × 111,909.99 - Step 4: Simplify right side
126,857.73x = 21,190,767,075.50 - Step 5: Solve for x
x = 21,190,767,075.50/126,857.73 - Step 6: Final answer
x = 167,043.56
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.