Finding the Fourth Proportional to 122,128.80, 183,193.20 and 102,445.80
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Solution
The fourth proportional to 122,128.80, 183,193.20 and 102,445.80 is: 153,668.70
Step by Step Solution
- Step 1: Write the proportion equation
122,128.80 : 183,193.20 = 102,445.80 : x - Step 2: Convert to fraction form
122,128.80/183,193.20 = 102,445.80/x - Step 3: Cross multiply
122,128.80x = 183,193.20 × 102,445.80 - Step 4: Simplify right side
122,128.80x = 18,767,373,928.56 - Step 5: Solve for x
x = 18,767,373,928.56/122,128.80 - Step 6: Final answer
x = 153,668.70
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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.