Finding the Fourth Proportional to 122,445.60, 183,668.40 and 121,279.20
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Solution
The fourth proportional to 122,445.60, 183,668.40 and 121,279.20 is: 181,918.80
Step by Step Solution
- Step 1: Write the proportion equation
122,445.60 : 183,668.40 = 121,279.20 : x - Step 2: Convert to fraction form
122,445.60/183,668.40 = 121,279.20/x - Step 3: Cross multiply
122,445.60x = 183,668.40 × 121,279.20 - Step 4: Simplify right side
122,445.60x = 22,275,156,617.28 - Step 5: Solve for x
x = 22,275,156,617.28/122,445.60 - Step 6: Final answer
x = 181,918.80
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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.