Finding the Fourth Proportional to 129,158.75, 193,738.75 and 39,202.25
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Solution
The fourth proportional to 129,158.75, 193,738.75 and 39,202.25 is: 58,803.56
Step by Step Solution
- Step 1: Write the proportion equation
129,158.75 : 193,738.75 = 39,202.25 : x - Step 2: Convert to fraction form
129,158.75/193,738.75 = 39,202.25/x - Step 3: Cross multiply
129,158.75x = 193,738.75 × 39,202.25 - Step 4: Simplify right side
129,158.75x = 7,594,994,427.13 - Step 5: Solve for x
x = 7,594,994,427.13/129,158.75 - Step 6: Final answer
x = 58,803.56
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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.