Finding the Fourth Proportional to 158,843.12, 219,201.86 and 87,222.46
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Solution
The fourth proportional to 158,843.12, 219,201.86 and 87,222.46 is: 120,366.09
Step by Step Solution
- Step 1: Write the proportion equation
158,843.12 : 219,201.86 = 87,222.46 : x - Step 2: Convert to fraction form
158,843.12/219,201.86 = 87,222.46/x - Step 3: Cross multiply
158,843.12x = 219,201.86 × 87,222.46 - Step 4: Simplify right side
158,843.12x = 19,119,325,465.78 - Step 5: Solve for x
x = 19,119,325,465.78/158,843.12 - Step 6: Final answer
x = 120,366.09
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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.