Finding the Fourth Proportional to 138,321.64, 207,408.21 and 43,534.09
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Solution
The fourth proportional to 138,321.64, 207,408.21 and 43,534.09 is: 65,277.77
Step by Step Solution
- Step 1: Write the proportion equation
138,321.64 : 207,408.21 = 43,534.09 : x - Step 2: Convert to fraction form
138,321.64/207,408.21 = 43,534.09/x - Step 3: Cross multiply
138,321.64x = 207,408.21 × 43,534.09 - Step 4: Simplify right side
138,321.64x = 9,029,327,680.88 - Step 5: Solve for x
x = 9,029,327,680.88/138,321.64 - Step 6: Final answer
x = 65,277.77
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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.