Finding the Fourth Proportional to 122,618.56, 169,217.60 and 68,913.92
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Solution
The fourth proportional to 122,618.56, 169,217.60 and 68,913.92 is: 95,103.45
Step by Step Solution
- Step 1: Write the proportion equation
122,618.56 : 169,217.60 = 68,913.92 : x - Step 2: Convert to fraction form
122,618.56/169,217.60 = 68,913.92/x - Step 3: Cross multiply
122,618.56x = 169,217.60 × 68,913.92 - Step 4: Simplify right side
122,618.56x = 11,661,448,148.99 - Step 5: Solve for x
x = 11,661,448,148.99/122,618.56 - Step 6: Final answer
x = 95,103.45
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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.