Finding the Fourth Proportional to 129,706.44, 194,680.95 and 79,883.74
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Solution
The fourth proportional to 129,706.44, 194,680.95 and 79,883.74 is: 119,900.31
Step by Step Solution
- Step 1: Write the proportion equation
129,706.44 : 194,680.95 = 79,883.74 : x - Step 2: Convert to fraction form
129,706.44/194,680.95 = 79,883.74/x - Step 3: Cross multiply
129,706.44x = 194,680.95 × 79,883.74 - Step 4: Simplify right side
129,706.44x = 15,551,842,392.75 - Step 5: Solve for x
x = 15,551,842,392.75/129,706.44 - Step 6: Final answer
x = 119,900.31
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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.