Finding the Fourth Proportional to 203,496.70, 305,245.05 and 85,155.70
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Solution
The fourth proportional to 203,496.70, 305,245.05 and 85,155.70 is: 127,733.55
Step by Step Solution
- Step 1: Write the proportion equation
203,496.70 : 305,245.05 = 85,155.70 : x - Step 2: Convert to fraction form
203,496.70/305,245.05 = 85,155.70/x - Step 3: Cross multiply
203,496.70x = 305,245.05 × 85,155.70 - Step 4: Simplify right side
203,496.70x = 25,993,355,904.29 - Step 5: Solve for x
x = 25,993,355,904.29/203,496.70 - Step 6: Final answer
x = 127,733.55
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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.