Finding the Fourth Proportional to 143,736.23, 196,919.35 and 138,349.12
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Solution
The fourth proportional to 143,736.23, 196,919.35 and 138,349.12 is: 189,538.98
Step by Step Solution
- Step 1: Write the proportion equation
143,736.23 : 196,919.35 = 138,349.12 : x - Step 2: Convert to fraction form
143,736.23/196,919.35 = 138,349.12/x - Step 3: Cross multiply
143,736.23x = 196,919.35 × 138,349.12 - Step 4: Simplify right side
143,736.23x = 27,243,618,091.73 - Step 5: Solve for x
x = 27,243,618,091.73/143,736.23 - Step 6: Final answer
x = 189,538.98
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.