Finding the Fourth Proportional to 138,034.13, 207,099.79 and 67,962.65
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Solution
The fourth proportional to 138,034.13, 207,099.79 and 67,962.65 is: 101,967.90
Step by Step Solution
- Step 1: Write the proportion equation
138,034.13 : 207,099.79 = 67,962.65 : x - Step 2: Convert to fraction form
138,034.13/207,099.79 = 67,962.65/x - Step 3: Cross multiply
138,034.13x = 207,099.79 × 67,962.65 - Step 4: Simplify right side
138,034.13x = 14,075,049,337.44 - Step 5: Solve for x
x = 14,075,049,337.44/138,034.13 - Step 6: Final answer
x = 101,967.90
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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.