Finding the Fourth Proportional to 129,903.26, 179,247.24 and 78,889.38
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Solution
The fourth proportional to 129,903.26, 179,247.24 and 78,889.38 is: 108,855.65
Step by Step Solution
- Step 1: Write the proportion equation
129,903.26 : 179,247.24 = 78,889.38 : x - Step 2: Convert to fraction form
129,903.26/179,247.24 = 78,889.38/x - Step 3: Cross multiply
129,903.26x = 179,247.24 × 78,889.38 - Step 4: Simplify right side
129,903.26x = 14,140,703,630.31 - Step 5: Solve for x
x = 14,140,703,630.31/129,903.26 - Step 6: Final answer
x = 108,855.65
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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.