Finding the Fourth Proportional to 125,936.80, 188,467.80 and 86,570.80
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Solution
The fourth proportional to 125,936.80, 188,467.80 and 86,570.80 is: 129,555.52
Step by Step Solution
- Step 1: Write the proportion equation
125,936.80 : 188,467.80 = 86,570.80 : x - Step 2: Convert to fraction form
125,936.80/188,467.80 = 86,570.80/x - Step 3: Cross multiply
125,936.80x = 188,467.80 × 86,570.80 - Step 4: Simplify right side
125,936.80x = 16,315,808,220.24 - Step 5: Solve for x
x = 16,315,808,220.24/125,936.80 - Step 6: Final answer
x = 129,555.52
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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.