Finding the Fourth Proportional to 122,685.68, 169,306.26 and 68,970.80
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Solution
The fourth proportional to 122,685.68, 169,306.26 and 68,970.80 is: 95,179.72
Step by Step Solution
- Step 1: Write the proportion equation
122,685.68 : 169,306.26 = 68,970.80 : x - Step 2: Convert to fraction form
122,685.68/169,306.26 = 68,970.80/x - Step 3: Cross multiply
122,685.68x = 169,306.26 × 68,970.80 - Step 4: Simplify right side
122,685.68x = 11,677,188,197.21 - Step 5: Solve for x
x = 11,677,188,197.21/122,685.68 - Step 6: Final answer
x = 95,179.72
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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.