Finding the Fourth Proportional to 122,902.79, 169,609.14 and 69,189.85
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Solution
The fourth proportional to 122,902.79, 169,609.14 and 69,189.85 is: 95,483.84
Step by Step Solution
- Step 1: Write the proportion equation
122,902.79 : 169,609.14 = 69,189.85 : x - Step 2: Convert to fraction form
122,902.79/169,609.14 = 69,189.85/x - Step 3: Cross multiply
122,902.79x = 169,609.14 × 69,189.85 - Step 4: Simplify right side
122,902.79x = 11,735,230,213.19 - Step 5: Solve for x
x = 11,735,230,213.19/122,902.79 - Step 6: Final answer
x = 95,483.84
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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.