Finding the Fourth Proportional to 218,720.10, 328,080.18 and 125,159.70
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Solution
The fourth proportional to 218,720.10, 328,080.18 and 125,159.70 is: 187,739.57
Step by Step Solution
- Step 1: Write the proportion equation
218,720.10 : 328,080.18 = 125,159.70 : x - Step 2: Convert to fraction form
218,720.10/328,080.18 = 125,159.70/x - Step 3: Cross multiply
218,720.10x = 328,080.18 × 125,159.70 - Step 4: Simplify right side
218,720.10x = 41,062,416,904.75 - Step 5: Solve for x
x = 41,062,416,904.75/218,720.10 - Step 6: Final answer
x = 187,739.57
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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.