Finding the Fourth Proportional to 99,542.80, 149,544.60 and 68,438.80
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Solution
The fourth proportional to 99,542.80, 149,544.60 and 68,438.80 is: 102,816.61
Step by Step Solution
- Step 1: Write the proportion equation
99,542.80 : 149,544.60 = 68,438.80 : x - Step 2: Convert to fraction form
99,542.80/149,544.60 = 68,438.80/x - Step 3: Cross multiply
99,542.80x = 149,544.60 × 68,438.80 - Step 4: Simplify right side
99,542.80x = 10,234,652,970.48 - Step 5: Solve for x
x = 10,234,652,970.48/99,542.80 - Step 6: Final answer
x = 102,816.61
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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.