Finding the Fourth Proportional to 143,273.64, 197,708.94 and 79,609.26
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Solution
The fourth proportional to 143,273.64, 197,708.94 and 79,609.26 is: 109,855.95
Step by Step Solution
- Step 1: Write the proportion equation
143,273.64 : 197,708.94 = 79,609.26 : x - Step 2: Convert to fraction form
143,273.64/197,708.94 = 79,609.26/x - Step 3: Cross multiply
143,273.64x = 197,708.94 × 79,609.26 - Step 4: Simplify right side
143,273.64x = 15,739,462,408.78 - Step 5: Solve for x
x = 15,739,462,408.78/143,273.64 - Step 6: Final answer
x = 109,855.95
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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.