Finding the Fourth Proportional to 129,437.54, 194,212.85 and 45,258.15
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Solution
The fourth proportional to 129,437.54, 194,212.85 and 45,258.15 is: 67,906.99
Step by Step Solution
- Step 1: Write the proportion equation
129,437.54 : 194,212.85 = 45,258.15 : x - Step 2: Convert to fraction form
129,437.54/194,212.85 = 45,258.15/x - Step 3: Cross multiply
129,437.54x = 194,212.85 × 45,258.15 - Step 4: Simplify right side
129,437.54x = 8,789,714,297.23 - Step 5: Solve for x
x = 8,789,714,297.23/129,437.54 - Step 6: Final answer
x = 67,906.99
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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.