Finding the Fourth Proportional to 140,677.48, 194,137.34 and 86,961.12
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Solution
The fourth proportional to 140,677.48, 194,137.34 and 86,961.12 is: 120,007.84
Step by Step Solution
- Step 1: Write the proportion equation
140,677.48 : 194,137.34 = 86,961.12 : x - Step 2: Convert to fraction form
140,677.48/194,137.34 = 86,961.12/x - Step 3: Cross multiply
140,677.48x = 194,137.34 × 86,961.12 - Step 4: Simplify right side
140,677.48x = 16,882,400,520.22 - Step 5: Solve for x
x = 16,882,400,520.22/140,677.48 - Step 6: Final answer
x = 120,007.84
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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.