Finding the Fourth Proportional to 138,058.21, 207,109.19 and 44,542.09
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Solution
The fourth proportional to 138,058.21, 207,109.19 and 44,542.09 is: 66,820.19
Step by Step Solution
- Step 1: Write the proportion equation
138,058.21 : 207,109.19 = 44,542.09 : x - Step 2: Convert to fraction form
138,058.21/207,109.19 = 44,542.09/x - Step 3: Cross multiply
138,058.21x = 207,109.19 × 44,542.09 - Step 4: Simplify right side
138,058.21x = 9,225,076,180.81 - Step 5: Solve for x
x = 9,225,076,180.81/138,058.21 - Step 6: Final answer
x = 66,820.19
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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.