Finding the Fourth Proportional to 139,169.07, 208,764.81 and 39,330.09
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Solution
The fourth proportional to 139,169.07, 208,764.81 and 39,330.09 is: 58,998.30
Step by Step Solution
- Step 1: Write the proportion equation
139,169.07 : 208,764.81 = 39,330.09 : x - Step 2: Convert to fraction form
139,169.07/208,764.81 = 39,330.09/x - Step 3: Cross multiply
139,169.07x = 208,764.81 × 39,330.09 - Step 4: Simplify right side
139,169.07x = 8,210,738,766.13 - Step 5: Solve for x
x = 8,210,738,766.13/139,169.07 - Step 6: Final answer
x = 58,998.30
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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.