Finding the Fourth Proportional to 187,128.66, 280,659.12 and 53,976.18
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Solution
The fourth proportional to 187,128.66, 280,659.12 and 53,976.18 is: 80,954.50
Step by Step Solution
- Step 1: Write the proportion equation
187,128.66 : 280,659.12 = 53,976.18 : x - Step 2: Convert to fraction form
187,128.66/280,659.12 = 53,976.18/x - Step 3: Cross multiply
187,128.66x = 280,659.12 × 53,976.18 - Step 4: Simplify right side
187,128.66x = 15,148,907,179.76 - Step 5: Solve for x
x = 15,148,907,179.76/187,128.66 - Step 6: Final answer
x = 80,954.50
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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.