Finding the Fourth Proportional to 135,208.80, 202,424.40 and 82,720.80
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Solution
The fourth proportional to 135,208.80, 202,424.40 and 82,720.80 is: 123,843.33
Step by Step Solution
- Step 1: Write the proportion equation
135,208.80 : 202,424.40 = 82,720.80 : x - Step 2: Convert to fraction form
135,208.80/202,424.40 = 82,720.80/x - Step 3: Cross multiply
135,208.80x = 202,424.40 × 82,720.80 - Step 4: Simplify right side
135,208.80x = 16,744,708,307.52 - Step 5: Solve for x
x = 16,744,708,307.52/135,208.80 - Step 6: Final answer
x = 123,843.33
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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.