Finding the Fourth Proportional to 126,145.36, 174,122.76 and 75,174.09
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Solution
The fourth proportional to 126,145.36, 174,122.76 and 75,174.09 is: 103,765.37
Step by Step Solution
- Step 1: Write the proportion equation
126,145.36 : 174,122.76 = 75,174.09 : x - Step 2: Convert to fraction form
126,145.36/174,122.76 = 75,174.09/x - Step 3: Cross multiply
126,145.36x = 174,122.76 × 75,174.09 - Step 4: Simplify right side
126,145.36x = 13,089,520,031.29 - Step 5: Solve for x
x = 13,089,520,031.29/126,145.36 - Step 6: Final answer
x = 103,765.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.