Finding the Fourth Proportional to 129,869.19, 194,656.28 and 54,942.57
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Solution
The fourth proportional to 129,869.19, 194,656.28 and 54,942.57 is: 82,351.45
Step by Step Solution
- Step 1: Write the proportion equation
129,869.19 : 194,656.28 = 54,942.57 : x - Step 2: Convert to fraction form
129,869.19/194,656.28 = 54,942.57/x - Step 3: Cross multiply
129,869.19x = 194,656.28 × 54,942.57 - Step 4: Simplify right side
129,869.19x = 10,694,916,015.13 - Step 5: Solve for x
x = 10,694,916,015.13/129,869.19 - Step 6: Final answer
x = 82,351.45
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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.