Finding the Fourth Proportional to 129.99, 195.09 and 75.93
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Solution
The fourth proportional to 129.99, 195.09 and 75.93 is: 113.96
Step by Step Solution
- Step 1: Write the proportion equation
129.99 : 195.09 = 75.93 : x - Step 2: Convert to fraction form
129.99/195.09 = 75.93/x - Step 3: Cross multiply
129.99x = 195.09 × 75.93 - Step 4: Simplify right side
129.99x = 14,813.18 - Step 5: Solve for x
x = 14,813.18/129.99 - Step 6: Final answer
x = 113.96
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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.