Finding the Fourth Proportional to 115,647.40, 173,471.10 and 71,129.80
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Solution
The fourth proportional to 115,647.40, 173,471.10 and 71,129.80 is: 106,694.70
Step by Step Solution
- Step 1: Write the proportion equation
115,647.40 : 173,471.10 = 71,129.80 : x - Step 2: Convert to fraction form
115,647.40/173,471.10 = 71,129.80/x - Step 3: Cross multiply
115,647.40x = 173,471.10 × 71,129.80 - Step 4: Simplify right side
115,647.40x = 12,338,964,648.78 - Step 5: Solve for x
x = 12,338,964,648.78/115,647.40 - Step 6: Final answer
x = 106,694.70
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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.