Finding the Fourth Proportional to 150,644.14, 207,907.36 and 86,981.80
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Solution
The fourth proportional to 150,644.14, 207,907.36 and 86,981.80 is: 120,045.54
Step by Step Solution
- Step 1: Write the proportion equation
150,644.14 : 207,907.36 = 86,981.80 : x - Step 2: Convert to fraction form
150,644.14/207,907.36 = 86,981.80/x - Step 3: Cross multiply
150,644.14x = 207,907.36 × 86,981.80 - Step 4: Simplify right side
150,644.14x = 18,084,156,406.05 - Step 5: Solve for x
x = 18,084,156,406.05/150,644.14 - Step 6: Final answer
x = 120,045.54
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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.