Finding the Fourth Proportional to 138,197.52, 207,296.28 and 76,261.68
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Solution
The fourth proportional to 138,197.52, 207,296.28 and 76,261.68 is: 114,392.52
Step by Step Solution
- Step 1: Write the proportion equation
138,197.52 : 207,296.28 = 76,261.68 : x - Step 2: Convert to fraction form
138,197.52/207,296.28 = 76,261.68/x - Step 3: Cross multiply
138,197.52x = 207,296.28 × 76,261.68 - Step 4: Simplify right side
138,197.52x = 15,808,762,570.55 - Step 5: Solve for x
x = 15,808,762,570.55/138,197.52 - Step 6: Final answer
x = 114,392.52
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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.