Finding the Fourth Proportional to 99,674.80, 149,742.60 and 68,570.80
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Solution
The fourth proportional to 99,674.80, 149,742.60 and 68,570.80 is: 103,014.70
Step by Step Solution
- Step 1: Write the proportion equation
99,674.80 : 149,742.60 = 68,570.80 : x - Step 2: Convert to fraction form
99,674.80/149,742.60 = 68,570.80/x - Step 3: Cross multiply
99,674.80x = 149,742.60 × 68,570.80 - Step 4: Simplify right side
99,674.80x = 10,267,969,876.08 - Step 5: Solve for x
x = 10,267,969,876.08/99,674.80 - Step 6: Final answer
x = 103,014.70
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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.