Finding the Fourth Proportional to 142,364.62, 196,473.09 and 78,708.34
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Solution
The fourth proportional to 142,364.62, 196,473.09 and 78,708.34 is: 108,622.99
Step by Step Solution
- Step 1: Write the proportion equation
142,364.62 : 196,473.09 = 78,708.34 : x - Step 2: Convert to fraction form
142,364.62/196,473.09 = 78,708.34/x - Step 3: Cross multiply
142,364.62x = 196,473.09 × 78,708.34 - Step 4: Simplify right side
142,364.62x = 15,464,070,768.57 - Step 5: Solve for x
x = 15,464,070,768.57/142,364.62 - Step 6: Final answer
x = 108,622.99
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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.