Finding the Fourth Proportional to 139,866.56, 193,088.84 and 109,173.75
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Solution
The fourth proportional to 139,866.56, 193,088.84 and 109,173.75 is: 150,716.75
Step by Step Solution
- Step 1: Write the proportion equation
139,866.56 : 193,088.84 = 109,173.75 : x - Step 2: Convert to fraction form
139,866.56/193,088.84 = 109,173.75/x - Step 3: Cross multiply
139,866.56x = 193,088.84 × 109,173.75 - Step 4: Simplify right side
139,866.56x = 21,080,232,745.95 - Step 5: Solve for x
x = 21,080,232,745.95/139,866.56 - Step 6: Final answer
x = 150,716.75
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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.