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Finding the Fourth Proportional to 122,859.20, 184,288.80 and 43,979.60

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Solution

The fourth proportional to 122,859.20, 184,288.80 and 43,979.60 is: 65,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,859.20 : 184,288.80 = 43,979.60 : x
  2. Step 2: Convert to fraction form
    122,859.20/184,288.80 = 43,979.60/x
  3. Step 3: Cross multiply
    122,859.20x = 184,288.80 × 43,979.60
  4. Step 4: Simplify right side
    122,859.20x = 8,104,947,708.48
  5. Step 5: Solve for x
    x = 8,104,947,708.48/122,859.20
  6. Step 6: Final answer
    x = 65,969.40

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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.