Finding the Fourth Proportional to 130.26, 194.99 and 84.51
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Solution
The fourth proportional to 130.26, 194.99 and 84.51 is: 126.50
Step by Step Solution
- Step 1: Write the proportion equation
130.26 : 194.99 = 84.51 : x - Step 2: Convert to fraction form
130.26/194.99 = 84.51/x - Step 3: Cross multiply
130.26x = 194.99 × 84.51 - Step 4: Simplify right side
130.26x = 16,478.18 - Step 5: Solve for x
x = 16,478.18/130.26 - Step 6: Final answer
x = 126.50
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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.