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Finding the Fourth Proportional to 120,757.29, 166,645.67 and 75,461.60

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Solution

The fourth proportional to 120,757.29, 166,645.67 and 75,461.60 is: 104,137.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,757.29 : 166,645.67 = 75,461.60 : x
  2. Step 2: Convert to fraction form
    120,757.29/166,645.67 = 75,461.60/x
  3. Step 3: Cross multiply
    120,757.29x = 166,645.67 × 75,461.60
  4. Step 4: Simplify right side
    120,757.29x = 12,575,347,680.74
  5. Step 5: Solve for x
    x = 12,575,347,680.74/120,757.29
  6. Step 6: Final answer
    x = 104,137.38

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1.5x scale

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.