Finding the Fourth Proportional to 115,905.80, 173,858.70 and 71,619.05
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Solution
The fourth proportional to 115,905.80, 173,858.70 and 71,619.05 is: 107,428.58
Step by Step Solution
- Step 1: Write the proportion equation
115,905.80 : 173,858.70 = 71,619.05 : x - Step 2: Convert to fraction form
115,905.80/173,858.70 = 71,619.05/x - Step 3: Cross multiply
115,905.80x = 173,858.70 × 71,619.05 - Step 4: Simplify right side
115,905.80x = 12,451,594,928.24 - Step 5: Solve for x
x = 12,451,594,928.24/115,905.80 - Step 6: Final answer
x = 107,428.58
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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.