Finding the Fourth Proportional to 153,351.20, 211,622.36 and 85,368.05
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Solution
The fourth proportional to 153,351.20, 211,622.36 and 85,368.05 is: 117,806.63
Step by Step Solution
- Step 1: Write the proportion equation
153,351.20 : 211,622.36 = 85,368.05 : x - Step 2: Convert to fraction form
153,351.20/211,622.36 = 85,368.05/x - Step 3: Cross multiply
153,351.20x = 211,622.36 × 85,368.05 - Step 4: Simplify right side
153,351.20x = 18,065,786,724.65 - Step 5: Solve for x
x = 18,065,786,724.65/153,351.20 - Step 6: Final answer
x = 117,806.63
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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.