Finding the Fourth Proportional to 130.65, 195.99 and 107.79
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Solution
The fourth proportional to 130.65, 195.99 and 107.79 is: 161.69
Step by Step Solution
- Step 1: Write the proportion equation
130.65 : 195.99 = 107.79 : x - Step 2: Convert to fraction form
130.65/195.99 = 107.79/x - Step 3: Cross multiply
130.65x = 195.99 × 107.79 - Step 4: Simplify right side
130.65x = 21,124.24 - Step 5: Solve for x
x = 21,124.24/130.65 - Step 6: Final answer
x = 161.69
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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.