Finding the Fourth Proportional to 126,351.28, 189,556.08 and 67,243.96
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Solution
The fourth proportional to 126,351.28, 189,556.08 and 67,243.96 is: 100,881.46
Step by Step Solution
- Step 1: Write the proportion equation
126,351.28 : 189,556.08 = 67,243.96 : x - Step 2: Convert to fraction form
126,351.28/189,556.08 = 67,243.96/x - Step 3: Cross multiply
126,351.28x = 189,556.08 × 67,243.96 - Step 4: Simplify right side
126,351.28x = 12,746,501,461.28 - Step 5: Solve for x
x = 12,746,501,461.28/126,351.28 - Step 6: Final answer
x = 100,881.46
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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.