Finding the Fourth Proportional to 207,748.21, 286,714.57 and 121,779.44
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Solution
The fourth proportional to 207,748.21, 286,714.57 and 121,779.44 is: 168,068.54
Step by Step Solution
- Step 1: Write the proportion equation
207,748.21 : 286,714.57 = 121,779.44 : x - Step 2: Convert to fraction form
207,748.21/286,714.57 = 121,779.44/x - Step 3: Cross multiply
207,748.21x = 286,714.57 × 121,779.44 - Step 4: Simplify right side
207,748.21x = 34,915,938,340.87 - Step 5: Solve for x
x = 34,915,938,340.87/207,748.21 - Step 6: Final answer
x = 168,068.54
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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.