Finding the Fourth Proportional to 128,119.36, 192,099.48 and 53,291.92
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Solution
The fourth proportional to 128,119.36, 192,099.48 and 53,291.92 is: 79,904.79
Step by Step Solution
- Step 1: Write the proportion equation
128,119.36 : 192,099.48 = 53,291.92 : x - Step 2: Convert to fraction form
128,119.36/192,099.48 = 53,291.92/x - Step 3: Cross multiply
128,119.36x = 192,099.48 × 53,291.92 - Step 4: Simplify right side
128,119.36x = 10,237,350,120.20 - Step 5: Solve for x
x = 10,237,350,120.20/128,119.36 - Step 6: Final answer
x = 79,904.79
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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.