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Finding the Fourth Proportional to 133,791.12, 184,630.08 and 77,201.28

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Solution

The fourth proportional to 133,791.12, 184,630.08 and 77,201.28 is: 106,536.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,791.12 : 184,630.08 = 77,201.28 : x
  2. Step 2: Convert to fraction form
    133,791.12/184,630.08 = 77,201.28/x
  3. Step 3: Cross multiply
    133,791.12x = 184,630.08 × 77,201.28
  4. Step 4: Simplify right side
    133,791.12x = 14,253,678,502.50
  5. Step 5: Solve for x
    x = 14,253,678,502.50/133,791.12
  6. Step 6: Final answer
    x = 106,536.81

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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.