Finding the Fourth Proportional to 130.24, 195.79 and 91.99
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Solution
The fourth proportional to 130.24, 195.79 and 91.99 is: 138.29
Step by Step Solution
- Step 1: Write the proportion equation
130.24 : 195.79 = 91.99 : x - Step 2: Convert to fraction form
130.24/195.79 = 91.99/x - Step 3: Cross multiply
130.24x = 195.79 × 91.99 - Step 4: Simplify right side
130.24x = 18,010.72 - Step 5: Solve for x
x = 18,010.72/130.24 - Step 6: Final answer
x = 138.29
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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.