Finding the Fourth Proportional to 122,432.26, 168,964.02 and 68,720.76
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Solution
The fourth proportional to 122,432.26, 168,964.02 and 68,720.76 is: 94,838.86
Step by Step Solution
- Step 1: Write the proportion equation
122,432.26 : 168,964.02 = 68,720.76 : x - Step 2: Convert to fraction form
122,432.26/168,964.02 = 68,720.76/x - Step 3: Cross multiply
122,432.26x = 168,964.02 × 68,720.76 - Step 4: Simplify right side
122,432.26x = 11,611,335,867.06 - Step 5: Solve for x
x = 11,611,335,867.06/122,432.26 - Step 6: Final answer
x = 94,838.86
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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.