Finding the Fourth Proportional to 120,193.46, 165,918.04 and 74,893.84
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Solution
The fourth proportional to 120,193.46, 165,918.04 and 74,893.84 is: 103,385.32
Step by Step Solution
- Step 1: Write the proportion equation
120,193.46 : 165,918.04 = 74,893.84 : x - Step 2: Convert to fraction form
120,193.46/165,918.04 = 74,893.84/x - Step 3: Cross multiply
120,193.46x = 165,918.04 × 74,893.84 - Step 4: Simplify right side
120,193.46x = 12,426,239,140.87 - Step 5: Solve for x
x = 12,426,239,140.87/120,193.46 - Step 6: Final answer
x = 103,385.32
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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.