Finding the Fourth Proportional to 100,649.17, 138,896.22 and 55,331.08
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Solution
The fourth proportional to 100,649.17, 138,896.22 and 55,331.08 is: 76,357.09
Step by Step Solution
- Step 1: Write the proportion equation
100,649.17 : 138,896.22 = 55,331.08 : x - Step 2: Convert to fraction form
100,649.17/138,896.22 = 55,331.08/x - Step 3: Cross multiply
100,649.17x = 138,896.22 × 55,331.08 - Step 4: Simplify right side
100,649.17x = 7,685,277,860.52 - Step 5: Solve for x
x = 7,685,277,860.52/100,649.17 - Step 6: Final answer
x = 76,357.09
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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.