Finding the Fourth Proportional to 138,850.05, 191,609.19 and 82,261.44
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Solution
The fourth proportional to 138,850.05, 191,609.19 and 82,261.44 is: 113,518.49
Step by Step Solution
- Step 1: Write the proportion equation
138,850.05 : 191,609.19 = 82,261.44 : x - Step 2: Convert to fraction form
138,850.05/191,609.19 = 82,261.44/x - Step 3: Cross multiply
138,850.05x = 191,609.19 × 82,261.44 - Step 4: Simplify right side
138,850.05x = 15,762,047,886.63 - Step 5: Solve for x
x = 15,762,047,886.63/138,850.05 - Step 6: Final answer
x = 113,518.49
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1.5x scale
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.