Finding the Fourth Proportional to 129,840.08, 194,760.12 and 31,344.08
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Solution
The fourth proportional to 129,840.08, 194,760.12 and 31,344.08 is: 47,016.12
Step by Step Solution
- Step 1: Write the proportion equation
129,840.08 : 194,760.12 = 31,344.08 : x - Step 2: Convert to fraction form
129,840.08/194,760.12 = 31,344.08/x - Step 3: Cross multiply
129,840.08x = 194,760.12 × 31,344.08 - Step 4: Simplify right side
129,840.08x = 6,104,576,782.09 - Step 5: Solve for x
x = 6,104,576,782.09/129,840.08 - Step 6: Final answer
x = 47,016.12
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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.