Finding the Fourth Proportional to 125,765.87, 173,498.58 and 74,749.99
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Solution
The fourth proportional to 125,765.87, 173,498.58 and 74,749.99 is: 103,120.33
Step by Step Solution
- Step 1: Write the proportion equation
125,765.87 : 173,498.58 = 74,749.99 : x - Step 2: Convert to fraction form
125,765.87/173,498.58 = 74,749.99/x - Step 3: Cross multiply
125,765.87x = 173,498.58 × 74,749.99 - Step 4: Simplify right side
125,765.87x = 12,969,017,221.81 - Step 5: Solve for x
x = 12,969,017,221.81/125,765.87 - Step 6: Final answer
x = 103,120.33
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1.5x scale
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.