Finding the Fourth Proportional to 138,996.16, 208,350.99 and 54,722.14
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Solution
The fourth proportional to 138,996.16, 208,350.99 and 54,722.14 is: 82,026.81
Step by Step Solution
- Step 1: Write the proportion equation
138,996.16 : 208,350.99 = 54,722.14 : x - Step 2: Convert to fraction form
138,996.16/208,350.99 = 54,722.14/x - Step 3: Cross multiply
138,996.16x = 208,350.99 × 54,722.14 - Step 4: Simplify right side
138,996.16x = 11,401,411,523.04 - Step 5: Solve for x
x = 11,401,411,523.04/138,996.16 - Step 6: Final answer
x = 82,026.81
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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.