Finding the Fourth Proportional to 129,863.45, 194,813.40 and 41,107.70
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Solution
The fourth proportional to 129,863.45, 194,813.40 and 41,107.70 is: 61,667.32
Step by Step Solution
- Step 1: Write the proportion equation
129,863.45 : 194,813.40 = 41,107.70 : x - Step 2: Convert to fraction form
129,863.45/194,813.40 = 41,107.70/x - Step 3: Cross multiply
129,863.45x = 194,813.40 × 41,107.70 - Step 4: Simplify right side
129,863.45x = 8,008,330,803.18 - Step 5: Solve for x
x = 8,008,330,803.18/129,863.45 - Step 6: Final answer
x = 61,667.32
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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.