Finding the Fourth Proportional to 139.73, 209.19 and 93.99
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Solution
The fourth proportional to 139.73, 209.19 and 93.99 is: 140.72
Step by Step Solution
- Step 1: Write the proportion equation
139.73 : 209.19 = 93.99 : x - Step 2: Convert to fraction form
139.73/209.19 = 93.99/x - Step 3: Cross multiply
139.73x = 209.19 × 93.99 - Step 4: Simplify right side
139.73x = 19,662.11 - Step 5: Solve for x
x = 19,662.11/139.73 - Step 6: Final answer
x = 140.72
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.