Finding the Fourth Proportional to 143,636.63, 215,645.69 and 122,711.09
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Solution
The fourth proportional to 143,636.63, 215,645.69 and 122,711.09 is: 184,229.59
Step by Step Solution
- Step 1: Write the proportion equation
143,636.63 : 215,645.69 = 122,711.09 : x - Step 2: Convert to fraction form
143,636.63/215,645.69 = 122,711.09/x - Step 3: Cross multiply
143,636.63x = 215,645.69 × 122,711.09 - Step 4: Simplify right side
143,636.63x = 26,462,116,902.25 - Step 5: Solve for x
x = 26,462,116,902.25/143,636.63 - Step 6: Final answer
x = 184,229.59
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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.