Finding the Fourth Proportional to 122,415.20, 183,622.80 and 69,927.20
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Solution
The fourth proportional to 122,415.20, 183,622.80 and 69,927.20 is: 104,890.80
Step by Step Solution
- Step 1: Write the proportion equation
122,415.20 : 183,622.80 = 69,927.20 : x - Step 2: Convert to fraction form
122,415.20/183,622.80 = 69,927.20/x - Step 3: Cross multiply
122,415.20x = 183,622.80 × 69,927.20 - Step 4: Simplify right side
122,415.20x = 12,840,228,260.16 - Step 5: Solve for x
x = 12,840,228,260.16/122,415.20 - Step 6: Final answer
x = 104,890.80
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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.