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Finding the Fourth Proportional to 122,987.20, 184,480.80 and 44,109.40

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Solution

The fourth proportional to 122,987.20, 184,480.80 and 44,109.40 is: 66,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,987.20 : 184,480.80 = 44,109.40 : x
  2. Step 2: Convert to fraction form
    122,987.20/184,480.80 = 44,109.40/x
  3. Step 3: Cross multiply
    122,987.20x = 184,480.80 × 44,109.40
  4. Step 4: Simplify right side
    122,987.20x = 8,137,337,399.52
  5. Step 5: Solve for x
    x = 8,137,337,399.52/122,987.20
  6. Step 6: Final answer
    x = 66,164.10

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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.