Finding the Fourth Proportional to 122,138.40, 183,207.60 and 101,143.20
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Solution
The fourth proportional to 122,138.40, 183,207.60 and 101,143.20 is: 151,714.80
Step by Step Solution
- Step 1: Write the proportion equation
122,138.40 : 183,207.60 = 101,143.20 : x - Step 2: Convert to fraction form
122,138.40/183,207.60 = 101,143.20/x - Step 3: Cross multiply
122,138.40x = 183,207.60 × 101,143.20 - Step 4: Simplify right side
122,138.40x = 18,530,202,928.32 - Step 5: Solve for x
x = 18,530,202,928.32/122,138.40 - Step 6: Final answer
x = 151,714.80
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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.