Finding the Fourth Proportional to 141,201.20, 211,801.80 and 105,771.80
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Solution
The fourth proportional to 141,201.20, 211,801.80 and 105,771.80 is: 158,657.70
Step by Step Solution
- Step 1: Write the proportion equation
141,201.20 : 211,801.80 = 105,771.80 : x - Step 2: Convert to fraction form
141,201.20/211,801.80 = 105,771.80/x - Step 3: Cross multiply
141,201.20x = 211,801.80 × 105,771.80 - Step 4: Simplify right side
141,201.20x = 22,402,657,629.24 - Step 5: Solve for x
x = 22,402,657,629.24/141,201.20 - Step 6: Final answer
x = 158,657.70
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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.