Finding the Fourth Proportional to 107.36, 147.99 and 83.99
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Solution
The fourth proportional to 107.36, 147.99 and 83.99 is: 115.78
Step by Step Solution
- Step 1: Write the proportion equation
107.36 : 147.99 = 83.99 : x - Step 2: Convert to fraction form
107.36/147.99 = 83.99/x - Step 3: Cross multiply
107.36x = 147.99 × 83.99 - Step 4: Simplify right side
107.36x = 12,429.68 - Step 5: Solve for x
x = 12,429.68/107.36 - Step 6: Final answer
x = 115.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.