Finding the Fourth Proportional to 138,075.26, 207,115.40 and 43,303.32
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Solution
The fourth proportional to 138,075.26, 207,115.40 and 43,303.32 is: 64,955.77
Step by Step Solution
- Step 1: Write the proportion equation
138,075.26 : 207,115.40 = 43,303.32 : x - Step 2: Convert to fraction form
138,075.26/207,115.40 = 43,303.32/x - Step 3: Cross multiply
138,075.26x = 207,115.40 × 43,303.32 - Step 4: Simplify right side
138,075.26x = 8,968,784,443.13 - Step 5: Solve for x
x = 8,968,784,443.13/138,075.26 - Step 6: Final answer
x = 64,955.77
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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.