Finding the Fourth Proportional to 138,029.80, 207,263.40 and 100,850.80
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Solution
The fourth proportional to 138,029.80, 207,263.40 and 100,850.80 is: 151,435.99
Step by Step Solution
- Step 1: Write the proportion equation
138,029.80 : 207,263.40 = 100,850.80 : x - Step 2: Convert to fraction form
138,029.80/207,263.40 = 100,850.80/x - Step 3: Cross multiply
138,029.80x = 207,263.40 × 100,850.80 - Step 4: Simplify right side
138,029.80x = 20,902,679,700.72 - Step 5: Solve for x
x = 20,902,679,700.72/138,029.80 - Step 6: Final answer
x = 151,435.99
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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.