Finding the Fourth Proportional to 121,854.62, 167,785.54 and 106,662.26
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Solution
The fourth proportional to 121,854.62, 167,785.54 and 106,662.26 is: 146,866.69
Step by Step Solution
- Step 1: Write the proportion equation
121,854.62 : 167,785.54 = 106,662.26 : x - Step 2: Convert to fraction form
121,854.62/167,785.54 = 106,662.26/x - Step 3: Cross multiply
121,854.62x = 167,785.54 × 106,662.26 - Step 4: Simplify right side
121,854.62x = 17,896,383,786.14 - Step 5: Solve for x
x = 17,896,383,786.14/121,854.62 - Step 6: Final answer
x = 146,866.69
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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.