Finding the Fourth Proportional to 149,961.20, 206,948.38 and 81,977.08
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Solution
The fourth proportional to 149,961.20, 206,948.38 and 81,977.08 is: 113,129.42
Step by Step Solution
- Step 1: Write the proportion equation
149,961.20 : 206,948.38 = 81,977.08 : x - Step 2: Convert to fraction form
149,961.20/206,948.38 = 81,977.08/x - Step 3: Cross multiply
149,961.20x = 206,948.38 × 81,977.08 - Step 4: Simplify right side
149,961.20x = 16,965,023,903.13 - Step 5: Solve for x
x = 16,965,023,903.13/149,961.20 - Step 6: Final answer
x = 113,129.42
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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.