Finding the Fourth Proportional to 122,841.84, 169,544.94 and 76,922.79
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Solution
The fourth proportional to 122,841.84, 169,544.94 and 76,922.79 is: 106,167.98
Step by Step Solution
- Step 1: Write the proportion equation
122,841.84 : 169,544.94 = 76,922.79 : x - Step 2: Convert to fraction form
122,841.84/169,544.94 = 76,922.79/x - Step 3: Cross multiply
122,841.84x = 169,544.94 × 76,922.79 - Step 4: Simplify right side
122,841.84x = 13,041,869,815.18 - Step 5: Solve for x
x = 13,041,869,815.18/122,841.84 - Step 6: Final answer
x = 106,167.98
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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.