Finding the Fourth Proportional to 139,505.09, 209,257.70 and 46,010.84
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Solution
The fourth proportional to 139,505.09, 209,257.70 and 46,010.84 is: 69,016.27
Step by Step Solution
- Step 1: Write the proportion equation
139,505.09 : 209,257.70 = 46,010.84 : x - Step 2: Convert to fraction form
139,505.09/209,257.70 = 46,010.84/x - Step 3: Cross multiply
139,505.09x = 209,257.70 × 46,010.84 - Step 4: Simplify right side
139,505.09x = 9,628,121,277.13 - Step 5: Solve for x
x = 9,628,121,277.13/139,505.09 - Step 6: Final answer
x = 69,016.27
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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.