Finding the Fourth Proportional to 129.53, 194.15 and 99
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Solution
The fourth proportional to 129.53, 194.15 and 99 is: 148.39
Step by Step Solution
- Step 1: Write the proportion equation
129.53 : 194.15 = 99 : x - Step 2: Convert to fraction form
129.53/194.15 = 99/x - Step 3: Cross multiply
129.53x = 194.15 × 99 - Step 4: Simplify right side
129.53x = 19,220.36 - Step 5: Solve for x
x = 19,220.36/129.53 - Step 6: Final answer
x = 148.39
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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.