Finding the Fourth Proportional to 138,761.12, 207,974.07 and 67,577.09
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Solution
The fourth proportional to 138,761.12, 207,974.07 and 67,577.09 is: 101,284.01
Step by Step Solution
- Step 1: Write the proportion equation
138,761.12 : 207,974.07 = 67,577.09 : x - Step 2: Convert to fraction form
138,761.12/207,974.07 = 67,577.09/x - Step 3: Cross multiply
138,761.12x = 207,974.07 × 67,577.09 - Step 4: Simplify right side
138,761.12x = 14,054,282,965.99 - Step 5: Solve for x
x = 14,054,282,965.99/138,761.12 - Step 6: Final answer
x = 101,284.01
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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.