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Finding the Fourth Proportional to 122,800.80, 184,201.20 and 104,138.40

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Solution

The fourth proportional to 122,800.80, 184,201.20 and 104,138.40 is: 156,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,800.80 : 184,201.20 = 104,138.40 : x
  2. Step 2: Convert to fraction form
    122,800.80/184,201.20 = 104,138.40/x
  3. Step 3: Cross multiply
    122,800.80x = 184,201.20 × 104,138.40
  4. Step 4: Simplify right side
    122,800.80x = 19,182,418,246.08
  5. Step 5: Solve for x
    x = 19,182,418,246.08/122,800.80
  6. Step 6: Final answer
    x = 156,207.60

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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.