Finding the Fourth Proportional to 138,850.79, 208,135.96 and 54,670.03
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Solution
The fourth proportional to 138,850.79, 208,135.96 and 54,670.03 is: 81,949.83
Step by Step Solution
- Step 1: Write the proportion equation
138,850.79 : 208,135.96 = 54,670.03 : x - Step 2: Convert to fraction form
138,850.79/208,135.96 = 54,670.03/x - Step 3: Cross multiply
138,850.79x = 208,135.96 × 54,670.03 - Step 4: Simplify right side
138,850.79x = 11,378,798,520.26 - Step 5: Solve for x
x = 11,378,798,520.26/138,850.79 - Step 6: Final answer
x = 81,949.83
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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.