Finding the Third Proportional to 128,749.50 and 192,393.75
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Solution
The third proportional to 128,749.50 and 192,393.75 is: 287,499.02
Step by Step Solution
- Step 1: Write the proportion equation
128,749.50 : 192,393.75 = 192,393.75 : x - Step 2: Convert to fraction form
128,749.50/192,393.75 = 192,393.75/x - Step 3: Cross multiply
128,749.50x = 192,393.75 × 192,393.75 - Step 4: Simplify right side
128,749.50x = 37,015,355,039.06 - Step 5: Solve for x
x = 37,015,355,039.06/128,749.50 - Step 6: Final answer
x = 287,499.02
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.