Finding the Fourth Proportional to 125,629.60, 188,116.35 and 81,014.80
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Solution
The fourth proportional to 125,629.60, 188,116.35 and 81,014.80 is: 121,310.65
Step by Step Solution
- Step 1: Write the proportion equation
125,629.60 : 188,116.35 = 81,014.80 : x - Step 2: Convert to fraction form
125,629.60/188,116.35 = 81,014.80/x - Step 3: Cross multiply
125,629.60x = 188,116.35 × 81,014.80 - Step 4: Simplify right side
125,629.60x = 15,240,208,471.98 - Step 5: Solve for x
x = 15,240,208,471.98/125,629.60 - Step 6: Final answer
x = 121,310.65
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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.