Finding the Fourth Proportional to 138,021.21, 207,075.56 and 49,272.75
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Solution
The fourth proportional to 138,021.21, 207,075.56 and 49,272.75 is: 73,924.74
Step by Step Solution
- Step 1: Write the proportion equation
138,021.21 : 207,075.56 = 49,272.75 : x - Step 2: Convert to fraction form
138,021.21/207,075.56 = 49,272.75/x - Step 3: Cross multiply
138,021.21x = 207,075.56 × 49,272.75 - Step 4: Simplify right side
138,021.21x = 10,203,182,298.99 - Step 5: Solve for x
x = 10,203,182,298.99/138,021.21 - Step 6: Final answer
x = 73,924.74
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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.