Finding the Fourth Proportional to 128,539.80, 192,579.30 and 110,107.80
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Solution
The fourth proportional to 128,539.80, 192,579.30 and 110,107.80 is: 164,964.34
Step by Step Solution
- Step 1: Write the proportion equation
128,539.80 : 192,579.30 = 110,107.80 : x - Step 2: Convert to fraction form
128,539.80/192,579.30 = 110,107.80/x - Step 3: Cross multiply
128,539.80x = 192,579.30 × 110,107.80 - Step 4: Simplify right side
128,539.80x = 21,204,483,048.54 - Step 5: Solve for x
x = 21,204,483,048.54/128,539.80 - Step 6: Final answer
x = 164,964.34
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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.