Finding the Fourth Proportional to 138,733.80, 191,452.26 and 75,072.68
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Solution
The fourth proportional to 138,733.80, 191,452.26 and 75,072.68 is: 103,600.09
Step by Step Solution
- Step 1: Write the proportion equation
138,733.80 : 191,452.26 = 75,072.68 : x - Step 2: Convert to fraction form
138,733.80/191,452.26 = 75,072.68/x - Step 3: Cross multiply
138,733.80x = 191,452.26 × 75,072.68 - Step 4: Simplify right side
138,733.80x = 14,372,834,250.26 - Step 5: Solve for x
x = 14,372,834,250.26/138,733.80 - Step 6: Final answer
x = 103,600.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.