Finding the Fourth Proportional to 100,744.49, 138,143.28 and 98,120.09
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Solution
The fourth proportional to 100,744.49, 138,143.28 and 98,120.09 is: 134,544.64
Step by Step Solution
- Step 1: Write the proportion equation
100,744.49 : 138,143.28 = 98,120.09 : x - Step 2: Convert to fraction form
100,744.49/138,143.28 = 98,120.09/x - Step 3: Cross multiply
100,744.49x = 138,143.28 × 98,120.09 - Step 4: Simplify right side
100,744.49x = 13,554,630,375.78 - Step 5: Solve for x
x = 13,554,630,375.78/100,744.49 - Step 6: Final answer
x = 134,544.64
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.