Finding the Fourth Proportional to 121,804.24, 168,116.96 and 74,047.44
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Solution
The fourth proportional to 121,804.24, 168,116.96 and 74,047.44 is: 102,201.95
Step by Step Solution
- Step 1: Write the proportion equation
121,804.24 : 168,116.96 = 74,047.44 : x - Step 2: Convert to fraction form
121,804.24/168,116.96 = 74,047.44/x - Step 3: Cross multiply
121,804.24x = 168,116.96 × 74,047.44 - Step 4: Simplify right side
121,804.24x = 12,448,630,508.58 - Step 5: Solve for x
x = 12,448,630,508.58/121,804.24 - Step 6: Final answer
x = 102,201.95
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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.