Finding the Fourth Proportional to 178,079.64, 267,163.08 and 81,971.88
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Solution
The fourth proportional to 178,079.64, 267,163.08 and 81,971.88 is: 122,977.90
Step by Step Solution
- Step 1: Write the proportion equation
178,079.64 : 267,163.08 = 81,971.88 : x - Step 2: Convert to fraction form
178,079.64/267,163.08 = 81,971.88/x - Step 3: Cross multiply
178,079.64x = 267,163.08 × 81,971.88 - Step 4: Simplify right side
178,079.64x = 21,899,859,934.19 - Step 5: Solve for x
x = 21,899,859,934.19/178,079.64 - Step 6: Final answer
x = 122,977.90
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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.