Finding the Fourth Proportional to 135,640.20, 203,460.30 and 129,881.10
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Solution
The fourth proportional to 135,640.20, 203,460.30 and 129,881.10 is: 194,821.65
Step by Step Solution
- Step 1: Write the proportion equation
135,640.20 : 203,460.30 = 129,881.10 : x - Step 2: Convert to fraction form
135,640.20/203,460.30 = 129,881.10/x - Step 3: Cross multiply
135,640.20x = 203,460.30 × 129,881.10 - Step 4: Simplify right side
135,640.20x = 26,425,647,570.33 - Step 5: Solve for x
x = 26,425,647,570.33/135,640.20 - Step 6: Final answer
x = 194,821.65
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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.