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Finding the Fourth Proportional to 122,961.90, 184,442.85 and 100,800.30

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Solution

The fourth proportional to 122,961.90, 184,442.85 and 100,800.30 is: 151,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,961.90 : 184,442.85 = 100,800.30 : x
  2. Step 2: Convert to fraction form
    122,961.90/184,442.85 = 100,800.30/x
  3. Step 3: Cross multiply
    122,961.90x = 184,442.85 × 100,800.30
  4. Step 4: Simplify right side
    122,961.90x = 18,591,894,612.86
  5. Step 5: Solve for x
    x = 18,591,894,612.86/122,961.90
  6. Step 6: Final answer
    x = 151,200.45

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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.