Finding the Fourth Proportional to 128,232.48, 192,176.74 and 99,803.76
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Solution
The fourth proportional to 128,232.48, 192,176.74 and 99,803.76 is: 149,571.79
Step by Step Solution
- Step 1: Write the proportion equation
128,232.48 : 192,176.74 = 99,803.76 : x - Step 2: Convert to fraction form
128,232.48/192,176.74 = 99,803.76/x - Step 3: Cross multiply
128,232.48x = 192,176.74 × 99,803.76 - Step 4: Simplify right side
128,232.48x = 19,179,961,236.54 - Step 5: Solve for x
x = 19,179,961,236.54/128,232.48 - Step 6: Final answer
x = 149,571.79
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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.