Finding the Fourth Proportional to 128,346.18, 192,358.80 and 61,768.44
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Solution
The fourth proportional to 128,346.18, 192,358.80 and 61,768.44 is: 92,575.43
Step by Step Solution
- Step 1: Write the proportion equation
128,346.18 : 192,358.80 = 61,768.44 : x - Step 2: Convert to fraction form
128,346.18/192,358.80 = 61,768.44/x - Step 3: Cross multiply
128,346.18x = 192,358.80 × 61,768.44 - Step 4: Simplify right side
128,346.18x = 11,881,702,996.27 - Step 5: Solve for x
x = 11,881,702,996.27/128,346.18 - Step 6: Final answer
x = 92,575.43
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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.