Finding the Fourth Proportional to 120,572.88, 180,860.86 and 83,122.94
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Solution
The fourth proportional to 120,572.88, 180,860.86 and 83,122.94 is: 124,685.47
Step by Step Solution
- Step 1: Write the proportion equation
120,572.88 : 180,860.86 = 83,122.94 : x - Step 2: Convert to fraction form
120,572.88/180,860.86 = 83,122.94/x - Step 3: Cross multiply
120,572.88x = 180,860.86 × 83,122.94 - Step 4: Simplify right side
120,572.88x = 15,033,686,414.13 - Step 5: Solve for x
x = 15,033,686,414.13/120,572.88 - Step 6: Final answer
x = 124,685.47
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.