Finding the Fourth Proportional to 129,631.80, 194,447.70 and 120,883.80
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Solution
The fourth proportional to 129,631.80, 194,447.70 and 120,883.80 is: 181,325.70
Step by Step Solution
- Step 1: Write the proportion equation
129,631.80 : 194,447.70 = 120,883.80 : x - Step 2: Convert to fraction form
129,631.80/194,447.70 = 120,883.80/x - Step 3: Cross multiply
129,631.80x = 194,447.70 × 120,883.80 - Step 4: Simplify right side
129,631.80x = 23,505,576,877.26 - Step 5: Solve for x
x = 23,505,576,877.26/129,631.80 - Step 6: Final answer
x = 181,325.70
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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.