Finding the Fourth Proportional to 129,633.75, 194,450.63 and 31,137.75
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Solution
The fourth proportional to 129,633.75, 194,450.63 and 31,137.75 is: 46,706.63
Step by Step Solution
- Step 1: Write the proportion equation
129,633.75 : 194,450.63 = 31,137.75 : x - Step 2: Convert to fraction form
129,633.75/194,450.63 = 31,137.75/x - Step 3: Cross multiply
129,633.75x = 194,450.63 × 31,137.75 - Step 4: Simplify right side
129,633.75x = 6,054,754,948.59 - Step 5: Solve for x
x = 6,054,754,948.59/129,633.75 - Step 6: Final answer
x = 46,706.63
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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.