Finding the Fourth Proportional to 138,232.07, 207,331.76 and 81,340.10
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Solution
The fourth proportional to 138,232.07, 207,331.76 and 81,340.10 is: 122,000.53
Step by Step Solution
- Step 1: Write the proportion equation
138,232.07 : 207,331.76 = 81,340.10 : x - Step 2: Convert to fraction form
138,232.07/207,331.76 = 81,340.10/x - Step 3: Cross multiply
138,232.07x = 207,331.76 × 81,340.10 - Step 4: Simplify right side
138,232.07x = 16,864,384,648.22 - Step 5: Solve for x
x = 16,864,384,648.22/138,232.07 - Step 6: Final answer
x = 122,000.53
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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.