Finding the Fourth Proportional to 134,115.20, 201,172.80 and 71,907.20
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Solution
The fourth proportional to 134,115.20, 201,172.80 and 71,907.20 is: 107,860.80
Step by Step Solution
- Step 1: Write the proportion equation
134,115.20 : 201,172.80 = 71,907.20 : x - Step 2: Convert to fraction form
134,115.20/201,172.80 = 71,907.20/x - Step 3: Cross multiply
134,115.20x = 201,172.80 × 71,907.20 - Step 4: Simplify right side
134,115.20x = 14,465,772,764.16 - Step 5: Solve for x
x = 14,465,772,764.16/134,115.20 - Step 6: Final answer
x = 107,860.80
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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.