Finding the Fourth Proportional to 138,106.11, 190,601.07 and 84,422.55
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Solution
The fourth proportional to 138,106.11, 190,601.07 and 84,422.55 is: 116,512.07
Step by Step Solution
- Step 1: Write the proportion equation
138,106.11 : 190,601.07 = 84,422.55 : x - Step 2: Convert to fraction form
138,106.11/190,601.07 = 84,422.55/x - Step 3: Cross multiply
138,106.11x = 190,601.07 × 84,422.55 - Step 4: Simplify right side
138,106.11x = 16,091,028,362.13 - Step 5: Solve for x
x = 16,091,028,362.13/138,106.11 - Step 6: Final answer
x = 116,512.07
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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.