Finding the Fourth Proportional to 189,069.71, 260,912.84 and 103,029.44
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Solution
The fourth proportional to 189,069.71, 260,912.84 and 103,029.44 is: 142,178.79
Step by Step Solution
- Step 1: Write the proportion equation
189,069.71 : 260,912.84 = 103,029.44 : x - Step 2: Convert to fraction form
189,069.71/260,912.84 = 103,029.44/x - Step 3: Cross multiply
189,069.71x = 260,912.84 × 103,029.44 - Step 4: Simplify right side
189,069.71x = 26,881,701,974.30 - Step 5: Solve for x
x = 26,881,701,974.30/189,069.71 - Step 6: Final answer
x = 142,178.79
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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.