Finding the Fourth Proportional to 125,868.80, 188,365.80 and 86,502.80
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Solution
The fourth proportional to 125,868.80, 188,365.80 and 86,502.80 is: 129,453.60
Step by Step Solution
- Step 1: Write the proportion equation
125,868.80 : 188,365.80 = 86,502.80 : x - Step 2: Convert to fraction form
125,868.80/188,365.80 = 86,502.80/x - Step 3: Cross multiply
125,868.80x = 188,365.80 × 86,502.80 - Step 4: Simplify right side
125,868.80x = 16,294,169,124.24 - Step 5: Solve for x
x = 16,294,169,124.24/125,868.80 - Step 6: Final answer
x = 129,453.60
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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.