Finding the Fourth Proportional to 138,497.13, 207,556.16 and 75,234.51
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Solution
The fourth proportional to 138,497.13, 207,556.16 and 75,234.51 is: 112,748.80
Step by Step Solution
- Step 1: Write the proportion equation
138,497.13 : 207,556.16 = 75,234.51 : x - Step 2: Convert to fraction form
138,497.13/207,556.16 = 75,234.51/x - Step 3: Cross multiply
138,497.13x = 207,556.16 × 75,234.51 - Step 4: Simplify right side
138,497.13x = 15,615,385,618.91 - Step 5: Solve for x
x = 15,615,385,618.91/138,497.13 - Step 6: Final answer
x = 112,748.80
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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.