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Finding the Fourth Proportional to 122,999.90, 184,499.85 and 111,919.10

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Solution

The fourth proportional to 122,999.90, 184,499.85 and 111,919.10 is: 167,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,999.90 : 184,499.85 = 111,919.10 : x
  2. Step 2: Convert to fraction form
    122,999.90/184,499.85 = 111,919.10/x
  3. Step 3: Cross multiply
    122,999.90x = 184,499.85 × 111,919.10
  4. Step 4: Simplify right side
    122,999.90x = 20,649,057,162.14
  5. Step 5: Solve for x
    x = 20,649,057,162.14/122,999.90
  6. Step 6: Final answer
    x = 167,878.65

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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.