Finding the Fourth Proportional to 129,859.96, 194,674.44 and 69,921.12
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Solution
The fourth proportional to 129,859.96, 194,674.44 and 69,921.12 is: 104,819.50
Step by Step Solution
- Step 1: Write the proportion equation
129,859.96 : 194,674.44 = 69,921.12 : x - Step 2: Convert to fraction form
129,859.96/194,674.44 = 69,921.12/x - Step 3: Cross multiply
129,859.96x = 194,674.44 × 69,921.12 - Step 4: Simplify right side
129,859.96x = 13,611,855,479.10 - Step 5: Solve for x
x = 13,611,855,479.10/129,859.96 - Step 6: Final answer
x = 104,819.50
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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.