Finding the Fourth Proportional to 115,461.80, 173,192.70 and 71,138.60
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Solution
The fourth proportional to 115,461.80, 173,192.70 and 71,138.60 is: 106,707.90
Step by Step Solution
- Step 1: Write the proportion equation
115,461.80 : 173,192.70 = 71,138.60 : x - Step 2: Convert to fraction form
115,461.80/173,192.70 = 71,138.60/x - Step 3: Cross multiply
115,461.80x = 173,192.70 × 71,138.60 - Step 4: Simplify right side
115,461.80x = 12,320,686,208.22 - Step 5: Solve for x
x = 12,320,686,208.22/115,461.80 - Step 6: Final answer
x = 106,707.90
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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.