Finding the Fourth Proportional to 100,139.49, 150,213.84 and 55,732.79
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Solution
The fourth proportional to 100,139.49, 150,213.84 and 55,732.79 is: 83,601.75
Step by Step Solution
- Step 1: Write the proportion equation
100,139.49 : 150,213.84 = 55,732.79 : x - Step 2: Convert to fraction form
100,139.49/150,213.84 = 55,732.79/x - Step 3: Cross multiply
100,139.49x = 150,213.84 × 55,732.79 - Step 4: Simplify right side
100,139.49x = 8,371,836,399.81 - Step 5: Solve for x
x = 8,371,836,399.81/100,139.49 - Step 6: Final answer
x = 83,601.75
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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.