Finding the Fourth Proportional to 201,520.05, 278,137.44 and 115,536.80
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Solution
The fourth proportional to 201,520.05, 278,137.44 and 115,536.80 is: 159,463.59
Step by Step Solution
- Step 1: Write the proportion equation
201,520.05 : 278,137.44 = 115,536.80 : x - Step 2: Convert to fraction form
201,520.05/278,137.44 = 115,536.80/x - Step 3: Cross multiply
201,520.05x = 278,137.44 × 115,536.80 - Step 4: Simplify right side
201,520.05x = 32,135,109,777.79 - Step 5: Solve for x
x = 32,135,109,777.79/201,520.05 - Step 6: Final answer
x = 159,463.59
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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.