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Finding the Fourth Proportional to 122,688.80, 184,033.20 and 43,805.60

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Solution

The fourth proportional to 122,688.80, 184,033.20 and 43,805.60 is: 65,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,688.80 : 184,033.20 = 43,805.60 : x
  2. Step 2: Convert to fraction form
    122,688.80/184,033.20 = 43,805.60/x
  3. Step 3: Cross multiply
    122,688.80x = 184,033.20 × 43,805.60
  4. Step 4: Simplify right side
    122,688.80x = 8,061,684,745.92
  5. Step 5: Solve for x
    x = 8,061,684,745.92/122,688.80
  6. Step 6: Final answer
    x = 65,708.40

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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.