Finding the Fourth Proportional to 121.99, 183.09 and 49.87
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Solution
The fourth proportional to 121.99, 183.09 and 49.87 is: 74.85
Step by Step Solution
- Step 1: Write the proportion equation
121.99 : 183.09 = 49.87 : x - Step 2: Convert to fraction form
121.99/183.09 = 49.87/x - Step 3: Cross multiply
121.99x = 183.09 × 49.87 - Step 4: Simplify right side
121.99x = 9,130.70 - Step 5: Solve for x
x = 9,130.70/121.99 - Step 6: Final answer
x = 74.85
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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.