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Finding the Fourth Proportional to 133,489.76, 184,282.52 and 76,890.20

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Solution

The fourth proportional to 133,489.76, 184,282.52 and 76,890.20 is: 106,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,489.76 : 184,282.52 = 76,890.20 : x
  2. Step 2: Convert to fraction form
    133,489.76/184,282.52 = 76,890.20/x
  3. Step 3: Cross multiply
    133,489.76x = 184,282.52 × 76,890.20
  4. Step 4: Simplify right side
    133,489.76x = 14,169,518,513.44
  5. Step 5: Solve for x
    x = 14,169,518,513.44/133,489.76
  6. Step 6: Final answer
    x = 106,146.86

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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.