Finding the Fourth Proportional to 121,735.84, 167,992.30 and 68,021.29
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Solution
The fourth proportional to 121,735.84, 167,992.30 and 68,021.29 is: 93,867.61
Step by Step Solution
- Step 1: Write the proportion equation
121,735.84 : 167,992.30 = 68,021.29 : x - Step 2: Convert to fraction form
121,735.84/167,992.30 = 68,021.29/x - Step 3: Cross multiply
121,735.84x = 167,992.30 × 68,021.29 - Step 4: Simplify right side
121,735.84x = 11,427,052,956.07 - Step 5: Solve for x
x = 11,427,052,956.07/121,735.84 - Step 6: Final answer
x = 93,867.61
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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.