Finding the Fourth Proportional to 135,206.80, 202,421.40 and 82,718.80
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Solution
The fourth proportional to 135,206.80, 202,421.40 and 82,718.80 is: 123,840.33
Step by Step Solution
- Step 1: Write the proportion equation
135,206.80 : 202,421.40 = 82,718.80 : x - Step 2: Convert to fraction form
135,206.80/202,421.40 = 82,718.80/x - Step 3: Cross multiply
135,206.80x = 202,421.40 × 82,718.80 - Step 4: Simplify right side
135,206.80x = 16,744,055,302.32 - Step 5: Solve for x
x = 16,744,055,302.32/135,206.80 - Step 6: Final answer
x = 123,840.33
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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.