Finding the Fourth Proportional to 121,911.62, 167,864.20 and 106,719.26
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Solution
The fourth proportional to 121,911.62, 167,864.20 and 106,719.26 is: 146,945.33
Step by Step Solution
- Step 1: Write the proportion equation
121,911.62 : 167,864.20 = 106,719.26 : x - Step 2: Convert to fraction form
121,911.62/167,864.20 = 106,719.26/x - Step 3: Cross multiply
121,911.62x = 167,864.20 × 106,719.26 - Step 4: Simplify right side
121,911.62x = 17,914,342,098.37 - Step 5: Solve for x
x = 17,914,342,098.37/121,911.62 - Step 6: Final answer
x = 146,945.33
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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.