Finding the Fourth Proportional to 122,568.76, 169,095.90 and 77,234.68
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Solution
The fourth proportional to 122,568.76, 169,095.90 and 77,234.68 is: 106,552.99
Step by Step Solution
- Step 1: Write the proportion equation
122,568.76 : 169,095.90 = 77,234.68 : x - Step 2: Convert to fraction form
122,568.76/169,095.90 = 77,234.68/x - Step 3: Cross multiply
122,568.76x = 169,095.90 × 77,234.68 - Step 4: Simplify right side
122,568.76x = 13,060,067,725.81 - Step 5: Solve for x
x = 13,060,067,725.81/122,568.76 - Step 6: Final answer
x = 106,552.99
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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.