Finding the Fourth Proportional to 122,789.62, 169,449.43 and 69,074.68
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Solution
The fourth proportional to 122,789.62, 169,449.43 and 69,074.68 is: 95,322.92
Step by Step Solution
- Step 1: Write the proportion equation
122,789.62 : 169,449.43 = 69,074.68 : x - Step 2: Convert to fraction form
122,789.62/169,449.43 = 69,074.68/x - Step 3: Cross multiply
122,789.62x = 169,449.43 × 69,074.68 - Step 4: Simplify right side
122,789.62x = 11,704,664,306.19 - Step 5: Solve for x
x = 11,704,664,306.19/122,789.62 - Step 6: Final answer
x = 95,322.92
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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.