Finding the Fourth Proportional to 143,311.80, 214,967.70 and 125,815.80
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Solution
The fourth proportional to 143,311.80, 214,967.70 and 125,815.80 is: 188,723.70
Step by Step Solution
- Step 1: Write the proportion equation
143,311.80 : 214,967.70 = 125,815.80 : x - Step 2: Convert to fraction form
143,311.80/214,967.70 = 125,815.80/x - Step 3: Cross multiply
143,311.80x = 214,967.70 × 125,815.80 - Step 4: Simplify right side
143,311.80x = 27,046,333,149.66 - Step 5: Solve for x
x = 27,046,333,149.66/143,311.80 - Step 6: Final answer
x = 188,723.70
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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.