Finding the Fourth Proportional to 143,424.64, 197,930.88 and 78,896.62
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Solution
The fourth proportional to 143,424.64, 197,930.88 and 78,896.62 is: 108,880.02
Step by Step Solution
- Step 1: Write the proportion equation
143,424.64 : 197,930.88 = 78,896.62 : x - Step 2: Convert to fraction form
143,424.64/197,930.88 = 78,896.62/x - Step 3: Cross multiply
143,424.64x = 197,930.88 × 78,896.62 - Step 4: Simplify right side
143,424.64x = 15,616,077,425.63 - Step 5: Solve for x
x = 15,616,077,425.63/143,424.64 - Step 6: Final answer
x = 108,880.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.