Finding the Fourth Proportional to 100,897.26, 139,239.18 and 55,575.44
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Solution
The fourth proportional to 100,897.26, 139,239.18 and 55,575.44 is: 76,694.63
Step by Step Solution
- Step 1: Write the proportion equation
100,897.26 : 139,239.18 = 55,575.44 : x - Step 2: Convert to fraction form
100,897.26/139,239.18 = 55,575.44/x - Step 3: Cross multiply
100,897.26x = 139,239.18 × 55,575.44 - Step 4: Simplify right side
100,897.26x = 7,738,277,997.54 - Step 5: Solve for x
x = 7,738,277,997.54/100,897.26 - Step 6: Final answer
x = 76,694.63
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1.5x scale
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.