Finding the Fourth Proportional to 121,021.07, 167,013.68 and 67,309.97
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Solution
The fourth proportional to 121,021.07, 167,013.68 and 67,309.97 is: 92,890.31
Step by Step Solution
- Step 1: Write the proportion equation
121,021.07 : 167,013.68 = 67,309.97 : x - Step 2: Convert to fraction form
121,021.07/167,013.68 = 67,309.97/x - Step 3: Cross multiply
121,021.07x = 167,013.68 × 67,309.97 - Step 4: Simplify right side
121,021.07x = 11,241,684,618.77 - Step 5: Solve for x
x = 11,241,684,618.77/121,021.07 - Step 6: Final answer
x = 92,890.31
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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.