Finding the Fourth Proportional to 83,106.77, 125,221.12 and 68,639.76
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Solution
The fourth proportional to 83,106.77, 125,221.12 and 68,639.76 is: 103,422.96
Step by Step Solution
- Step 1: Write the proportion equation
83,106.77 : 125,221.12 = 68,639.76 : x - Step 2: Convert to fraction form
83,106.77/125,221.12 = 68,639.76/x - Step 3: Cross multiply
83,106.77x = 125,221.12 × 68,639.76 - Step 4: Simplify right side
83,106.77x = 8,595,147,452.13 - Step 5: Solve for x
x = 8,595,147,452.13/83,106.77 - Step 6: Final answer
x = 103,422.96
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.