Finding the Fourth Proportional to 141,865.08, 195,771.36 and 78,208.80
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Solution
The fourth proportional to 141,865.08, 195,771.36 and 78,208.80 is: 107,926.79
Step by Step Solution
- Step 1: Write the proportion equation
141,865.08 : 195,771.36 = 78,208.80 : x - Step 2: Convert to fraction form
141,865.08/195,771.36 = 78,208.80/x - Step 3: Cross multiply
141,865.08x = 195,771.36 × 78,208.80 - Step 4: Simplify right side
141,865.08x = 15,311,043,139.97 - Step 5: Solve for x
x = 15,311,043,139.97/141,865.08 - Step 6: Final answer
x = 107,926.79
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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.