Finding the Fourth Proportional to 138,977.18, 208,744.74 and 82,926.68
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Solution
The fourth proportional to 138,977.18, 208,744.74 and 82,926.68 is: 124,556.48
Step by Step Solution
- Step 1: Write the proportion equation
138,977.18 : 208,744.74 = 82,926.68 : x - Step 2: Convert to fraction form
138,977.18/208,744.74 = 82,926.68/x - Step 3: Cross multiply
138,977.18x = 208,744.74 × 82,926.68 - Step 4: Simplify right side
138,977.18x = 17,310,508,255.66 - Step 5: Solve for x
x = 17,310,508,255.66/138,977.18 - Step 6: Final answer
x = 124,556.48
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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.