Finding the Fourth Proportional to 121,539.10, 182,416.65 and 71,556.70
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Solution
The fourth proportional to 121,539.10, 182,416.65 and 71,556.70 is: 107,398.64
Step by Step Solution
- Step 1: Write the proportion equation
121,539.10 : 182,416.65 = 71,556.70 : x - Step 2: Convert to fraction form
121,539.10/182,416.65 = 71,556.70/x - Step 3: Cross multiply
121,539.10x = 182,416.65 × 71,556.70 - Step 4: Simplify right side
121,539.10x = 13,053,133,499.06 - Step 5: Solve for x
x = 13,053,133,499.06/121,539.10 - Step 6: Final answer
x = 107,398.64
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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.