Finding the Fourth Proportional to 130,379.91, 179,918.06 and 80,069.19
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Solution
The fourth proportional to 130,379.91, 179,918.06 and 80,069.19 is: 110,491.66
Step by Step Solution
- Step 1: Write the proportion equation
130,379.91 : 179,918.06 = 80,069.19 : x - Step 2: Convert to fraction form
130,379.91/179,918.06 = 80,069.19/x - Step 3: Cross multiply
130,379.91x = 179,918.06 × 80,069.19 - Step 4: Simplify right side
130,379.91x = 14,405,892,930.23 - Step 5: Solve for x
x = 14,405,892,930.23/130,379.91 - Step 6: Final answer
x = 110,491.66
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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.