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Finding the Fourth Proportional to 122,714.40, 184,071.60 and 91,221.60

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Solution

The fourth proportional to 122,714.40, 184,071.60 and 91,221.60 is: 136,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,714.40 : 184,071.60 = 91,221.60 : x
  2. Step 2: Convert to fraction form
    122,714.40/184,071.60 = 91,221.60/x
  3. Step 3: Cross multiply
    122,714.40x = 184,071.60 × 91,221.60
  4. Step 4: Simplify right side
    122,714.40x = 16,791,305,866.56
  5. Step 5: Solve for x
    x = 16,791,305,866.56/122,714.40
  6. Step 6: Final answer
    x = 136,832.40

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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.