Finding the Fourth Proportional to 129,231.44, 193,847.28 and 40,485.68
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Solution
The fourth proportional to 129,231.44, 193,847.28 and 40,485.68 is: 60,728.56
Step by Step Solution
- Step 1: Write the proportion equation
129,231.44 : 193,847.28 = 40,485.68 : x - Step 2: Convert to fraction form
129,231.44/193,847.28 = 40,485.68/x - Step 3: Cross multiply
129,231.44x = 193,847.28 × 40,485.68 - Step 4: Simplify right side
129,231.44x = 7,848,038,946.95 - Step 5: Solve for x
x = 7,848,038,946.95/129,231.44 - Step 6: Final answer
x = 60,728.56
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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.