Finding the Fourth Proportional to 142,048.68, 213,107.70 and 47,278.68
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Solution
The fourth proportional to 142,048.68, 213,107.70 and 47,278.68 is: 70,929.56
Step by Step Solution
- Step 1: Write the proportion equation
142,048.68 : 213,107.70 = 47,278.68 : x - Step 2: Convert to fraction form
142,048.68/213,107.70 = 47,278.68/x - Step 3: Cross multiply
142,048.68x = 213,107.70 × 47,278.68 - Step 4: Simplify right side
142,048.68x = 10,075,450,753.84 - Step 5: Solve for x
x = 10,075,450,753.84/142,048.68 - Step 6: Final answer
x = 70,929.56
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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.