Finding the Fourth Proportional to 129,075.08, 178,121.28 and 71,714.66
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Solution
The fourth proportional to 129,075.08, 178,121.28 and 71,714.66 is: 98,964.94
Step by Step Solution
- Step 1: Write the proportion equation
129,075.08 : 178,121.28 = 71,714.66 : x - Step 2: Convert to fraction form
129,075.08/178,121.28 = 71,714.66/x - Step 3: Cross multiply
129,075.08x = 178,121.28 × 71,714.66 - Step 4: Simplify right side
129,075.08x = 12,773,907,033.96 - Step 5: Solve for x
x = 12,773,907,033.96/129,075.08 - Step 6: Final answer
x = 98,964.94
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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.