Finding the Fourth Proportional to 122,034.64, 168,378.76 and 74,287.44
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Solution
The fourth proportional to 122,034.64, 168,378.76 and 74,287.44 is: 102,498.99
Step by Step Solution
- Step 1: Write the proportion equation
122,034.64 : 168,378.76 = 74,287.44 : x - Step 2: Convert to fraction form
122,034.64/168,378.76 = 74,287.44/x - Step 3: Cross multiply
122,034.64x = 168,378.76 × 74,287.44 - Step 4: Simplify right side
122,034.64x = 12,508,427,030.77 - Step 5: Solve for x
x = 12,508,427,030.77/122,034.64 - Step 6: Final answer
x = 102,498.99
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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.