Finding the Fourth Proportional to 138,023.56, 190,479.36 and 84,299.88
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Solution
The fourth proportional to 138,023.56, 190,479.36 and 84,299.88 is: 116,338.02
Step by Step Solution
- Step 1: Write the proportion equation
138,023.56 : 190,479.36 = 84,299.88 : x - Step 2: Convert to fraction form
138,023.56/190,479.36 = 84,299.88/x - Step 3: Cross multiply
138,023.56x = 190,479.36 × 84,299.88 - Step 4: Simplify right side
138,023.56x = 16,057,387,190.48 - Step 5: Solve for x
x = 16,057,387,190.48/138,023.56 - Step 6: Final answer
x = 116,338.02
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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.