Finding the Fourth Proportional to 121,192,780.73, 167,247,107.57 and 68,985,178.43
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Solution
The fourth proportional to 121,192,780.73, 167,247,107.57 and 68,985,178.43 is: 95,200,155.39
Step by Step Solution
- Step 1: Write the proportion equation
121,192,780.73 : 167,247,107.57 = 68,985,178.43 : x - Step 2: Convert to fraction form
121,192,780.73/167,247,107.57 = 68,985,178.43/x - Step 3: Cross multiply
121,192,780.73x = 167,247,107.57 × 68,985,178.43 - Step 4: Simplify right side
121,192,780.73x = 11,537,571,556,954,080 - Step 5: Solve for x
x = 11,537,571,556,954,080/121,192,780.73 - Step 6: Final answer
x = 95,200,155.39
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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.