Finding the Fourth Proportional to 138,865.75, 208,334.15 and 40,369.75
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Solution
The fourth proportional to 138,865.75, 208,334.15 and 40,369.75 is: 60,564.95
Step by Step Solution
- Step 1: Write the proportion equation
138,865.75 : 208,334.15 = 40,369.75 : x - Step 2: Convert to fraction form
138,865.75/208,334.15 = 40,369.75/x - Step 3: Cross multiply
138,865.75x = 208,334.15 × 40,369.75 - Step 4: Simplify right side
138,865.75x = 8,410,397,551.96 - Step 5: Solve for x
x = 8,410,397,551.96/138,865.75 - Step 6: Final answer
x = 60,564.95
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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.