Finding the Fourth Proportional to 129.36, 194.19 and 102.02
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Solution
The fourth proportional to 129.36, 194.19 and 102.02 is: 153.15
Step by Step Solution
- Step 1: Write the proportion equation
129.36 : 194.19 = 102.02 : x - Step 2: Convert to fraction form
129.36/194.19 = 102.02/x - Step 3: Cross multiply
129.36x = 194.19 × 102.02 - Step 4: Simplify right side
129.36x = 19,811.26 - Step 5: Solve for x
x = 19,811.26/129.36 - Step 6: Final answer
x = 153.15
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.