Finding the Fourth Proportional to 129,640.40, 194,460.60 and 129,640.40
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Solution
The fourth proportional to 129,640.40, 194,460.60 and 129,640.40 is: 194,460.60
Step by Step Solution
- Step 1: Write the proportion equation
129,640.40 : 194,460.60 = 129,640.40 : x - Step 2: Convert to fraction form
129,640.40/194,460.60 = 129,640.40/x - Step 3: Cross multiply
129,640.40x = 194,460.60 × 129,640.40 - Step 4: Simplify right side
129,640.40x = 25,209,949,968.24 - Step 5: Solve for x
x = 25,209,949,968.24/129,640.40 - Step 6: Final answer
x = 194,460.60
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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.