Finding the Fourth Proportional to 129,886.66, 194,657.74 and 66,704.23
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Solution
The fourth proportional to 129,886.66, 194,657.74 and 66,704.23 is: 99,967.88
Step by Step Solution
- Step 1: Write the proportion equation
129,886.66 : 194,657.74 = 66,704.23 : x - Step 2: Convert to fraction form
129,886.66/194,657.74 = 66,704.23/x - Step 3: Cross multiply
129,886.66x = 194,657.74 × 66,704.23 - Step 4: Simplify right side
129,886.66x = 12,984,494,660.24 - Step 5: Solve for x
x = 12,984,494,660.24/129,886.66 - Step 6: Final answer
x = 99,967.88
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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.