Finding the Fourth Proportional to 100,532.46, 138,657.91 and 68,291.94
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Solution
The fourth proportional to 100,532.46, 138,657.91 and 68,291.94 is: 94,190.65
Step by Step Solution
- Step 1: Write the proportion equation
100,532.46 : 138,657.91 = 68,291.94 : x - Step 2: Convert to fraction form
100,532.46/138,657.91 = 68,291.94/x - Step 3: Cross multiply
100,532.46x = 138,657.91 × 68,291.94 - Step 4: Simplify right side
100,532.46x = 9,469,217,670.25 - Step 5: Solve for x
x = 9,469,217,670.25/100,532.46 - Step 6: Final answer
x = 94,190.65
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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.