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Finding the Fourth Proportional to 133,481.28, 184,245.28 and 76,930.40

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Solution

The fourth proportional to 133,481.28, 184,245.28 and 76,930.40 is: 106,187.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,481.28 : 184,245.28 = 76,930.40 : x
  2. Step 2: Convert to fraction form
    133,481.28/184,245.28 = 76,930.40/x
  3. Step 3: Cross multiply
    133,481.28x = 184,245.28 × 76,930.40
  4. Step 4: Simplify right side
    133,481.28x = 14,174,063,088.51
  5. Step 5: Solve for x
    x = 14,174,063,088.51/133,481.28
  6. Step 6: Final answer
    x = 106,187.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.