Finding the Fourth Proportional to 83,908.15, 125,862.22 and 78,775.99
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Solution
The fourth proportional to 83,908.15, 125,862.22 and 78,775.99 is: 118,163.98
Step by Step Solution
- Step 1: Write the proportion equation
83,908.15 : 125,862.22 = 78,775.99 : x - Step 2: Convert to fraction form
83,908.15/125,862.22 = 78,775.99/x - Step 3: Cross multiply
83,908.15x = 125,862.22 × 78,775.99 - Step 4: Simplify right side
83,908.15x = 9,914,920,984.10 - Step 5: Solve for x
x = 9,914,920,984.10/83,908.15 - Step 6: Final answer
x = 118,163.98
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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.