Finding the Fourth Proportional to 122,678.68, 169,292.66 and 68,965.96
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Solution
The fourth proportional to 122,678.68, 169,292.66 and 68,965.96 is: 95,170.82
Step by Step Solution
- Step 1: Write the proportion equation
122,678.68 : 169,292.66 = 68,965.96 : x - Step 2: Convert to fraction form
122,678.68/169,292.66 = 68,965.96/x - Step 3: Cross multiply
122,678.68x = 169,292.66 × 68,965.96 - Step 4: Simplify right side
122,678.68x = 11,675,430,817.85 - Step 5: Solve for x
x = 11,675,430,817.85/122,678.68 - Step 6: Final answer
x = 95,170.82
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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.