Finding the Fourth Proportional to 129,720.68, 194,497.17 and 50,842.88
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Solution
The fourth proportional to 129,720.68, 194,497.17 and 50,842.88 is: 76,231.46
Step by Step Solution
- Step 1: Write the proportion equation
129,720.68 : 194,497.17 = 50,842.88 : x - Step 2: Convert to fraction form
129,720.68/194,497.17 = 50,842.88/x - Step 3: Cross multiply
129,720.68x = 194,497.17 × 50,842.88 - Step 4: Simplify right side
129,720.68x = 9,888,796,760.89 - Step 5: Solve for x
x = 9,888,796,760.89/129,720.68 - Step 6: Final answer
x = 76,231.46
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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.