Home / 123,021.10-184,415.55-66,778.30

Finding the Fourth Proportional to 123,021.10, 184,415.55 and 66,778.30

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Solution

The fourth proportional to 123,021.10, 184,415.55 and 66,778.30 is: 100,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,021.10 : 184,415.55 = 66,778.30 : x
  2. Step 2: Convert to fraction form
    123,021.10/184,415.55 = 66,778.30/x
  3. Step 3: Cross multiply
    123,021.10x = 184,415.55 × 66,778.30
  4. Step 4: Simplify right side
    123,021.10x = 12,314,956,922.57
  5. Step 5: Solve for x
    x = 12,314,956,922.57/123,021.10
  6. Step 6: Final answer
    x = 100,104.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.