Finding the Fourth Proportional to 129.23, 193.11 and 98.21
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Solution
The fourth proportional to 129.23, 193.11 and 98.21 is: 146.76
Step by Step Solution
- Step 1: Write the proportion equation
129.23 : 193.11 = 98.21 : x - Step 2: Convert to fraction form
129.23/193.11 = 98.21/x - Step 3: Cross multiply
129.23x = 193.11 × 98.21 - Step 4: Simplify right side
129.23x = 18,966.00 - Step 5: Solve for x
x = 18,966.00/129.23 - Step 6: Final answer
x = 146.76
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.