Finding the Fourth Proportional to 138,317.53, 190,896.38 and 77,899.99
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Solution
The fourth proportional to 138,317.53, 190,896.38 and 77,899.99 is: 107,512.23
Step by Step Solution
- Step 1: Write the proportion equation
138,317.53 : 190,896.38 = 77,899.99 : x - Step 2: Convert to fraction form
138,317.53/190,896.38 = 77,899.99/x - Step 3: Cross multiply
138,317.53x = 190,896.38 × 77,899.99 - Step 4: Simplify right side
138,317.53x = 14,870,826,093.04 - Step 5: Solve for x
x = 14,870,826,093.04/138,317.53 - Step 6: Final answer
x = 107,512.23
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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.