Finding the Fourth Proportional to 126,435.09, 174,485.44 and 72,720.05
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Solution
The fourth proportional to 126,435.09, 174,485.44 and 72,720.05 is: 100,356.54
Step by Step Solution
- Step 1: Write the proportion equation
126,435.09 : 174,485.44 = 72,720.05 : x - Step 2: Convert to fraction form
126,435.09/174,485.44 = 72,720.05/x - Step 3: Cross multiply
126,435.09x = 174,485.44 × 72,720.05 - Step 4: Simplify right side
126,435.09x = 12,688,589,139.54 - Step 5: Solve for x
x = 12,688,589,139.54/126,435.09 - Step 6: Final answer
x = 100,356.54
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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.