Home / 120,909.63-166,865.90-67,205.55

Finding the Fourth Proportional to 120,909.63, 166,865.90 and 67,205.55

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Solution

The fourth proportional to 120,909.63, 166,865.90 and 67,205.55 is: 92,749.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,909.63 : 166,865.90 = 67,205.55 : x
  2. Step 2: Convert to fraction form
    120,909.63/166,865.90 = 67,205.55/x
  3. Step 3: Cross multiply
    120,909.63x = 166,865.90 × 67,205.55
  4. Step 4: Simplify right side
    120,909.63x = 11,214,314,585.75
  5. Step 5: Solve for x
    x = 11,214,314,585.75/120,909.63
  6. Step 6: Final answer
    x = 92,749.56

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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.