Finding the Fourth Proportional to 122.93, 183.99 and 86.41
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Solution
The fourth proportional to 122.93, 183.99 and 86.41 is: 129.33
Step by Step Solution
- Step 1: Write the proportion equation
122.93 : 183.99 = 86.41 : x - Step 2: Convert to fraction form
122.93/183.99 = 86.41/x - Step 3: Cross multiply
122.93x = 183.99 × 86.41 - Step 4: Simplify right side
122.93x = 15,898.58 - Step 5: Solve for x
x = 15,898.58/122.93 - Step 6: Final answer
x = 129.33
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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.