Finding the Fourth Proportional to 138,110.21, 207,209.10 and 49,361.75
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Solution
The fourth proportional to 138,110.21, 207,209.10 and 49,361.75 is: 74,058.27
Step by Step Solution
- Step 1: Write the proportion equation
138,110.21 : 207,209.10 = 49,361.75 : x - Step 2: Convert to fraction form
138,110.21/207,209.10 = 49,361.75/x - Step 3: Cross multiply
138,110.21x = 207,209.10 × 49,361.75 - Step 4: Simplify right side
138,110.21x = 10,228,203,791.93 - Step 5: Solve for x
x = 10,228,203,791.93/138,110.21 - Step 6: Final answer
x = 74,058.27
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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.