Finding the Fourth Proportional to 129,839.08, 194,758.62 and 31,343.08
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Solution
The fourth proportional to 129,839.08, 194,758.62 and 31,343.08 is: 47,014.62
Step by Step Solution
- Step 1: Write the proportion equation
129,839.08 : 194,758.62 = 31,343.08 : x - Step 2: Convert to fraction form
129,839.08/194,758.62 = 31,343.08/x - Step 3: Cross multiply
129,839.08x = 194,758.62 × 31,343.08 - Step 4: Simplify right side
129,839.08x = 6,104,335,007.35 - Step 5: Solve for x
x = 6,104,335,007.35/129,839.08 - Step 6: Final answer
x = 47,014.62
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1.5x scale
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.