Finding the Fourth Proportional to 135,622.80, 203,239.80 and 99,804.60
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Solution
The fourth proportional to 135,622.80, 203,239.80 and 99,804.60 is: 149,563.84
Step by Step Solution
- Step 1: Write the proportion equation
135,622.80 : 203,239.80 = 99,804.60 : x - Step 2: Convert to fraction form
135,622.80/203,239.80 = 99,804.60/x - Step 3: Cross multiply
135,622.80x = 203,239.80 × 99,804.60 - Step 4: Simplify right side
135,622.80x = 20,284,266,943.08 - Step 5: Solve for x
x = 20,284,266,943.08/135,622.80 - Step 6: Final answer
x = 149,563.84
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1.5x scale
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.