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Finding the Fourth Proportional to 120,880.63, 166,745.77 and 75,479.79

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Solution

The fourth proportional to 120,880.63, 166,745.77 and 75,479.79 is: 104,118.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,880.63 : 166,745.77 = 75,479.79 : x
  2. Step 2: Convert to fraction form
    120,880.63/166,745.77 = 75,479.79/x
  3. Step 3: Cross multiply
    120,880.63x = 166,745.77 × 75,479.79
  4. Step 4: Simplify right side
    120,880.63x = 12,585,935,702.99
  5. Step 5: Solve for x
    x = 12,585,935,702.99/120,880.63
  6. Step 6: Final answer
    x = 104,118.71

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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.