Finding the Fourth Proportional to 120,317.06, 180,653.01 and 67,112.99
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Solution
The fourth proportional to 120,317.06, 180,653.01 and 67,112.99 is: 100,768.45
Step by Step Solution
- Step 1: Write the proportion equation
120,317.06 : 180,653.01 = 67,112.99 : x - Step 2: Convert to fraction form
120,317.06/180,653.01 = 67,112.99/x - Step 3: Cross multiply
120,317.06x = 180,653.01 × 67,112.99 - Step 4: Simplify right side
120,317.06x = 12,124,163,653.60 - Step 5: Solve for x
x = 12,124,163,653.60/120,317.06 - Step 6: Final answer
x = 100,768.45
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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.