Finding the Fourth Proportional to 143,400.36, 197,839.62 and 86,791.08
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Solution
The fourth proportional to 143,400.36, 197,839.62 and 86,791.08 is: 119,739.69
Step by Step Solution
- Step 1: Write the proportion equation
143,400.36 : 197,839.62 = 86,791.08 : x - Step 2: Convert to fraction form
143,400.36/197,839.62 = 86,791.08/x - Step 3: Cross multiply
143,400.36x = 197,839.62 × 86,791.08 - Step 4: Simplify right side
143,400.36x = 17,170,714,286.59 - Step 5: Solve for x
x = 17,170,714,286.59/143,400.36 - Step 6: Final answer
x = 119,739.69
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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.