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Finding the Fourth Proportional to 133,607.52, 184,375.92 and 77,021.28

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Solution

The fourth proportional to 133,607.52, 184,375.92 and 77,021.28 is: 106,287.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,607.52 : 184,375.92 = 77,021.28 : x
  2. Step 2: Convert to fraction form
    133,607.52/184,375.92 = 77,021.28/x
  3. Step 3: Cross multiply
    133,607.52x = 184,375.92 × 77,021.28
  4. Step 4: Simplify right side
    133,607.52x = 14,200,869,359.58
  5. Step 5: Solve for x
    x = 14,200,869,359.58/133,607.52
  6. Step 6: Final answer
    x = 106,287.95

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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.