Finding the Fourth Proportional to 111,161.36, 153,491.13 and 102,660.37
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Solution
The fourth proportional to 111,161.36, 153,491.13 and 102,660.37 is: 141,752.99
Step by Step Solution
- Step 1: Write the proportion equation
111,161.36 : 153,491.13 = 102,660.37 : x - Step 2: Convert to fraction form
111,161.36/153,491.13 = 102,660.37/x - Step 3: Cross multiply
111,161.36x = 153,491.13 × 102,660.37 - Step 4: Simplify right side
111,161.36x = 15,757,455,813.79 - Step 5: Solve for x
x = 15,757,455,813.79/111,161.36 - Step 6: Final answer
x = 141,752.99
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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.