Finding the Fourth Proportional to 122,518.20, 183,431.70 and 119,062.20
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Solution
The fourth proportional to 122,518.20, 183,431.70 and 119,062.20 is: 178,257.45
Step by Step Solution
- Step 1: Write the proportion equation
122,518.20 : 183,431.70 = 119,062.20 : x - Step 2: Convert to fraction form
122,518.20/183,431.70 = 119,062.20/x - Step 3: Cross multiply
122,518.20x = 183,431.70 × 119,062.20 - Step 4: Simplify right side
122,518.20x = 21,839,781,751.74 - Step 5: Solve for x
x = 21,839,781,751.74/122,518.20 - Step 6: Final answer
x = 178,257.45
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1.5x scale
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.