Finding the Fourth Proportional to 153,880.80, 230,821.20 and 87,295.20
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Solution
The fourth proportional to 153,880.80, 230,821.20 and 87,295.20 is: 130,942.80
Step by Step Solution
- Step 1: Write the proportion equation
153,880.80 : 230,821.20 = 87,295.20 : x - Step 2: Convert to fraction form
153,880.80/230,821.20 = 87,295.20/x - Step 3: Cross multiply
153,880.80x = 230,821.20 × 87,295.20 - Step 4: Simplify right side
153,880.80x = 20,149,582,818.24 - Step 5: Solve for x
x = 20,149,582,818.24/153,880.80 - Step 6: Final answer
x = 130,942.80
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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.