Finding the Fourth Proportional to 128,093.70, 192,140.55 and 44,987.70
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Solution
The fourth proportional to 128,093.70, 192,140.55 and 44,987.70 is: 67,481.55
Step by Step Solution
- Step 1: Write the proportion equation
128,093.70 : 192,140.55 = 44,987.70 : x - Step 2: Convert to fraction form
128,093.70/192,140.55 = 44,987.70/x - Step 3: Cross multiply
128,093.70x = 192,140.55 × 44,987.70 - Step 4: Simplify right side
128,093.70x = 8,643,961,421.24 - Step 5: Solve for x
x = 8,643,961,421.24/128,093.70 - Step 6: Final answer
x = 67,481.55
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1.5x scale
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.