Finding the Fourth Proportional to 83,106.64, 125,220.94 and 68,639.64
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Solution
The fourth proportional to 83,106.64, 125,220.94 and 68,639.64 is: 103,422.79
Step by Step Solution
- Step 1: Write the proportion equation
83,106.64 : 125,220.94 = 68,639.64 : x - Step 2: Convert to fraction form
83,106.64/125,220.94 = 68,639.64/x - Step 3: Cross multiply
83,106.64x = 125,220.94 × 68,639.64 - Step 4: Simplify right side
83,106.64x = 8,595,120,242.06 - Step 5: Solve for x
x = 8,595,120,242.06/83,106.64 - Step 6: Final answer
x = 103,422.79
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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.