Finding the Fourth Proportional to 100,205.81, 138,279.08 and 54,883.99
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Solution
The fourth proportional to 100,205.81, 138,279.08 and 54,883.99 is: 75,737.20
Step by Step Solution
- Step 1: Write the proportion equation
100,205.81 : 138,279.08 = 54,883.99 : x - Step 2: Convert to fraction form
100,205.81/138,279.08 = 54,883.99/x - Step 3: Cross multiply
100,205.81x = 138,279.08 × 54,883.99 - Step 4: Simplify right side
100,205.81x = 7,589,307,643.93 - Step 5: Solve for x
x = 7,589,307,643.93/100,205.81 - Step 6: Final answer
x = 75,737.20
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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.