Finding the Fourth Proportional to 138,358.80, 207,405.36 and 88,297.56
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Solution
The fourth proportional to 138,358.80, 207,405.36 and 88,297.56 is: 132,361.56
Step by Step Solution
- Step 1: Write the proportion equation
138,358.80 : 207,405.36 = 88,297.56 : x - Step 2: Convert to fraction form
138,358.80/207,405.36 = 88,297.56/x - Step 3: Cross multiply
138,358.80x = 207,405.36 × 88,297.56 - Step 4: Simplify right side
138,358.80x = 18,313,387,218.92 - Step 5: Solve for x
x = 18,313,387,218.92/138,358.80 - Step 6: Final answer
x = 132,361.56
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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.