Finding the Fourth Proportional to 125,811.81, 173,625.07 and 72,107.19
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Solution
The fourth proportional to 125,811.81, 173,625.07 and 72,107.19 is: 99,510.66
Step by Step Solution
- Step 1: Write the proportion equation
125,811.81 : 173,625.07 = 72,107.19 : x - Step 2: Convert to fraction form
125,811.81/173,625.07 = 72,107.19/x - Step 3: Cross multiply
125,811.81x = 173,625.07 × 72,107.19 - Step 4: Simplify right side
125,811.81x = 12,519,615,377.87 - Step 5: Solve for x
x = 12,519,615,377.87/125,811.81 - Step 6: Final answer
x = 99,510.66
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1.5x scale
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.