Finding the Fourth Proportional to 149,170.76, 205,857.92 and 81,190.42
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Solution
The fourth proportional to 149,170.76, 205,857.92 and 81,190.42 is: 112,044.02
Step by Step Solution
- Step 1: Write the proportion equation
149,170.76 : 205,857.92 = 81,190.42 : x - Step 2: Convert to fraction form
149,170.76/205,857.92 = 81,190.42/x - Step 3: Cross multiply
149,170.76x = 205,857.92 × 81,190.42 - Step 4: Simplify right side
149,170.76x = 16,713,690,985.13 - Step 5: Solve for x
x = 16,713,690,985.13/149,170.76 - Step 6: Final answer
x = 112,044.02
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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.