Finding the Fourth Proportional to 111,786.07, 154,333.70 and 76,920.70
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Solution
The fourth proportional to 111,786.07, 154,333.70 and 76,920.70 is: 106,197.99
Step by Step Solution
- Step 1: Write the proportion equation
111,786.07 : 154,333.70 = 76,920.70 : x - Step 2: Convert to fraction form
111,786.07/154,333.70 = 76,920.70/x - Step 3: Cross multiply
111,786.07x = 154,333.70 × 76,920.70 - Step 4: Simplify right side
111,786.07x = 11,871,456,237.59 - Step 5: Solve for x
x = 11,871,456,237.59/111,786.07 - Step 6: Final answer
x = 106,197.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.