Finding the Fourth Proportional to 138,863.79, 208,295.67 and 48,885.31
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Solution
The fourth proportional to 138,863.79, 208,295.67 and 48,885.31 is: 73,327.96
Step by Step Solution
- Step 1: Write the proportion equation
138,863.79 : 208,295.67 = 48,885.31 : x - Step 2: Convert to fraction form
138,863.79/208,295.67 = 48,885.31/x - Step 3: Cross multiply
138,863.79x = 208,295.67 × 48,885.31 - Step 4: Simplify right side
138,863.79x = 10,182,598,399.61 - Step 5: Solve for x
x = 10,182,598,399.61/138,863.79 - Step 6: Final answer
x = 73,327.96
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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.