Finding the Fourth Proportional to 138,146.21, 207,218.64 and 119,369.11
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Solution
The fourth proportional to 138,146.21, 207,218.64 and 119,369.11 is: 179,053.07
Step by Step Solution
- Step 1: Write the proportion equation
138,146.21 : 207,218.64 = 119,369.11 : x - Step 2: Convert to fraction form
138,146.21/207,218.64 = 119,369.11/x - Step 3: Cross multiply
138,146.21x = 207,218.64 × 119,369.11 - Step 4: Simplify right side
138,146.21x = 24,735,504,278.88 - Step 5: Solve for x
x = 24,735,504,278.88/138,146.21 - Step 6: Final answer
x = 179,053.07
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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.