Finding the Fourth Proportional to 138,613.06, 207,945.21 and 43,867.09
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Solution
The fourth proportional to 138,613.06, 207,945.21 and 43,867.09 is: 65,808.74
Step by Step Solution
- Step 1: Write the proportion equation
138,613.06 : 207,945.21 = 43,867.09 : x - Step 2: Convert to fraction form
138,613.06/207,945.21 = 43,867.09/x - Step 3: Cross multiply
138,613.06x = 207,945.21 × 43,867.09 - Step 4: Simplify right side
138,613.06x = 9,121,951,242.14 - Step 5: Solve for x
x = 9,121,951,242.14/138,613.06 - Step 6: Final answer
x = 65,808.74
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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.