Finding the Fourth Proportional to 128,865.35, 193,260.96 and 53,983.68
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Solution
The fourth proportional to 128,865.35, 193,260.96 and 53,983.68 is: 80,960.00
Step by Step Solution
- Step 1: Write the proportion equation
128,865.35 : 193,260.96 = 53,983.68 : x - Step 2: Convert to fraction form
128,865.35/193,260.96 = 53,983.68/x - Step 3: Cross multiply
128,865.35x = 193,260.96 × 53,983.68 - Step 4: Simplify right side
128,865.35x = 10,432,937,821.13 - Step 5: Solve for x
x = 10,432,937,821.13/128,865.35 - Step 6: Final answer
x = 80,960.00
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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.