Finding the Fourth Proportional to 138,106.30, 207,268.80 and 53,906.80
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Solution
The fourth proportional to 138,106.30, 207,268.80 and 53,906.80 is: 80,902.88
Step by Step Solution
- Step 1: Write the proportion equation
138,106.30 : 207,268.80 = 53,906.80 : x - Step 2: Convert to fraction form
138,106.30/207,268.80 = 53,906.80/x - Step 3: Cross multiply
138,106.30x = 207,268.80 × 53,906.80 - Step 4: Simplify right side
138,106.30x = 11,173,197,747.84 - Step 5: Solve for x
x = 11,173,197,747.84/138,106.30 - Step 6: Final answer
x = 80,902.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.