Finding the Fourth Proportional to 149,889.74, 206,845.35 and 81,905.23
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Solution
The fourth proportional to 149,889.74, 206,845.35 and 81,905.23 is: 113,027.85
Step by Step Solution
- Step 1: Write the proportion equation
149,889.74 : 206,845.35 = 81,905.23 : x - Step 2: Convert to fraction form
149,889.74/206,845.35 = 81,905.23/x - Step 3: Cross multiply
149,889.74x = 206,845.35 × 81,905.23 - Step 4: Simplify right side
149,889.74x = 16,941,714,754.09 - Step 5: Solve for x
x = 16,941,714,754.09/149,889.74 - Step 6: Final answer
x = 113,027.85
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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.