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Finding the Fourth Proportional to 123,022.60, 184,417.80 and 66,779.80

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Solution

The fourth proportional to 123,022.60, 184,417.80 and 66,779.80 is: 100,106.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,022.60 : 184,417.80 = 66,779.80 : x
  2. Step 2: Convert to fraction form
    123,022.60/184,417.80 = 66,779.80/x
  3. Step 3: Cross multiply
    123,022.60x = 184,417.80 × 66,779.80
  4. Step 4: Simplify right side
    123,022.60x = 12,315,383,800.44
  5. Step 5: Solve for x
    x = 12,315,383,800.44/123,022.60
  6. Step 6: Final answer
    x = 100,106.68

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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.