Finding the Fourth Proportional to 128,201.95, 176,882.65 and 73,751.28
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Solution
The fourth proportional to 128,201.95, 176,882.65 and 73,751.28 is: 101,756.03
Step by Step Solution
- Step 1: Write the proportion equation
128,201.95 : 176,882.65 = 73,751.28 : x - Step 2: Convert to fraction form
128,201.95/176,882.65 = 73,751.28/x - Step 3: Cross multiply
128,201.95x = 176,882.65 × 73,751.28 - Step 4: Simplify right side
128,201.95x = 13,045,321,847.29 - Step 5: Solve for x
x = 13,045,321,847.29/128,201.95 - Step 6: Final answer
x = 101,756.03
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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.