Finding the Fourth Proportional to 119,638.96, 165,129.84 and 74,351.05
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Solution
The fourth proportional to 119,638.96, 165,129.84 and 74,351.05 is: 102,621.90
Step by Step Solution
- Step 1: Write the proportion equation
119,638.96 : 165,129.84 = 74,351.05 : x - Step 2: Convert to fraction form
119,638.96/165,129.84 = 74,351.05/x - Step 3: Cross multiply
119,638.96x = 165,129.84 × 74,351.05 - Step 4: Simplify right side
119,638.96x = 12,277,576,577.51 - Step 5: Solve for x
x = 12,277,576,577.51/119,638.96 - Step 6: Final answer
x = 102,621.90
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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.