Finding the Fourth Proportional to 122,929.68, 169,286.04 and 106,789.68
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Solution
The fourth proportional to 122,929.68, 169,286.04 and 106,789.68 is: 147,059.70
Step by Step Solution
- Step 1: Write the proportion equation
122,929.68 : 169,286.04 = 106,789.68 : x - Step 2: Convert to fraction form
122,929.68/169,286.04 = 106,789.68/x - Step 3: Cross multiply
122,929.68x = 169,286.04 × 106,789.68 - Step 4: Simplify right side
122,929.68x = 18,078,002,040.07 - Step 5: Solve for x
x = 18,078,002,040.07/122,929.68 - Step 6: Final answer
x = 147,059.70
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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.