Finding the Fourth Proportional to 126,258.12, 189,042.12 and 122,912.28
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Solution
The fourth proportional to 126,258.12, 189,042.12 and 122,912.28 is: 184,032.50
Step by Step Solution
- Step 1: Write the proportion equation
126,258.12 : 189,042.12 = 122,912.28 : x - Step 2: Convert to fraction form
126,258.12/189,042.12 = 122,912.28/x - Step 3: Cross multiply
126,258.12x = 189,042.12 × 122,912.28 - Step 4: Simplify right side
126,258.12x = 23,235,597,985.23 - Step 5: Solve for x
x = 23,235,597,985.23/126,258.12 - Step 6: Final answer
x = 184,032.50
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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.