Finding the Fourth Proportional to 126,804.75, 174,989.30 and 68,661.21
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Solution
The fourth proportional to 126,804.75, 174,989.30 and 68,661.21 is: 94,751.79
Step by Step Solution
- Step 1: Write the proportion equation
126,804.75 : 174,989.30 = 68,661.21 : x - Step 2: Convert to fraction form
126,804.75/174,989.30 = 68,661.21/x - Step 3: Cross multiply
126,804.75x = 174,989.30 × 68,661.21 - Step 4: Simplify right side
126,804.75x = 12,014,977,075.05 - Step 5: Solve for x
x = 12,014,977,075.05/126,804.75 - Step 6: Final answer
x = 94,751.79
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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.