Finding the Fourth Proportional to 122,115.24, 168,524.22 and 71,119.75
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Solution
The fourth proportional to 122,115.24, 168,524.22 and 71,119.75 is: 98,148.28
Step by Step Solution
- Step 1: Write the proportion equation
122,115.24 : 168,524.22 = 71,119.75 : x - Step 2: Convert to fraction form
122,115.24/168,524.22 = 71,119.75/x - Step 3: Cross multiply
122,115.24x = 168,524.22 × 71,119.75 - Step 4: Simplify right side
122,115.24x = 11,985,400,395.35 - Step 5: Solve for x
x = 11,985,400,395.35/122,115.24 - Step 6: Final answer
x = 98,148.28
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1.5x scale
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.