Finding the Fourth Proportional to 139,074.12, 206,821.92 and 134,645.40
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Solution
The fourth proportional to 139,074.12, 206,821.92 and 134,645.40 is: 200,235.82
Step by Step Solution
- Step 1: Write the proportion equation
139,074.12 : 206,821.92 = 134,645.40 : x - Step 2: Convert to fraction form
139,074.12/206,821.92 = 134,645.40/x - Step 3: Cross multiply
139,074.12x = 206,821.92 × 134,645.40 - Step 4: Simplify right side
139,074.12x = 27,847,620,147.17 - Step 5: Solve for x
x = 27,847,620,147.17/139,074.12 - Step 6: Final answer
x = 200,235.82
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.