Finding the Fourth Proportional to 151,779.44, 209,483.88 and 87,286.44
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Solution
The fourth proportional to 151,779.44, 209,483.88 and 87,286.44 is: 120,471.54
Step by Step Solution
- Step 1: Write the proportion equation
151,779.44 : 209,483.88 = 87,286.44 : x - Step 2: Convert to fraction form
151,779.44/209,483.88 = 87,286.44/x - Step 3: Cross multiply
151,779.44x = 209,483.88 × 87,286.44 - Step 4: Simplify right side
151,779.44x = 18,285,102,122.59 - Step 5: Solve for x
x = 18,285,102,122.59/151,779.44 - Step 6: Final answer
x = 120,471.54
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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.