Finding the Fourth Proportional to 137,984.97, 190,402.21 and 79,851.68
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Solution
The fourth proportional to 137,984.97, 190,402.21 and 79,851.68 is: 110,185.45
Step by Step Solution
- Step 1: Write the proportion equation
137,984.97 : 190,402.21 = 79,851.68 : x - Step 2: Convert to fraction form
137,984.97/190,402.21 = 79,851.68/x - Step 3: Cross multiply
137,984.97x = 190,402.21 × 79,851.68 - Step 4: Simplify right side
137,984.97x = 15,203,936,344.21 - Step 5: Solve for x
x = 15,203,936,344.21/137,984.97 - Step 6: Final answer
x = 110,185.45
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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.