Finding the Fourth Proportional to 138,236.13, 207,346.91 and 68,091.75
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Solution
The fourth proportional to 138,236.13, 207,346.91 and 68,091.75 is: 102,134.03
Step by Step Solution
- Step 1: Write the proportion equation
138,236.13 : 207,346.91 = 68,091.75 : x - Step 2: Convert to fraction form
138,236.13/207,346.91 = 68,091.75/x - Step 3: Cross multiply
138,236.13x = 207,346.91 × 68,091.75 - Step 4: Simplify right side
138,236.13x = 14,118,613,618.53 - Step 5: Solve for x
x = 14,118,613,618.53/138,236.13 - Step 6: Final answer
x = 102,134.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.