Finding the Fourth Proportional to 103,885.80, 143,375.62 and 68,105.96
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Solution
The fourth proportional to 103,885.80, 143,375.62 and 68,105.96 is: 93,994.89
Step by Step Solution
- Step 1: Write the proportion equation
103,885.80 : 143,375.62 = 68,105.96 : x - Step 2: Convert to fraction form
103,885.80/143,375.62 = 68,105.96/x - Step 3: Cross multiply
103,885.80x = 143,375.62 × 68,105.96 - Step 4: Simplify right side
103,885.80x = 9,764,734,240.70 - Step 5: Solve for x
x = 9,764,734,240.70/103,885.80 - Step 6: Final answer
x = 93,994.89
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.