Finding the Fourth Proportional to 128,700.56, 192,788.04 and 66,239.84
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Solution
The fourth proportional to 128,700.56, 192,788.04 and 66,239.84 is: 99,224.50
Step by Step Solution
- Step 1: Write the proportion equation
128,700.56 : 192,788.04 = 66,239.84 : x - Step 2: Convert to fraction form
128,700.56/192,788.04 = 66,239.84/x - Step 3: Cross multiply
128,700.56x = 192,788.04 × 66,239.84 - Step 4: Simplify right side
128,700.56x = 12,770,248,923.51 - Step 5: Solve for x
x = 12,770,248,923.51/128,700.56 - Step 6: Final answer
x = 99,224.50
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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.