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Finding the Fourth Proportional to 178,809.12, 246,974.87 and 133,687.46

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Solution

The fourth proportional to 178,809.12, 246,974.87 and 133,687.46 is: 184,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,809.12 : 246,974.87 = 133,687.46 : x
  2. Step 2: Convert to fraction form
    178,809.12/246,974.87 = 133,687.46/x
  3. Step 3: Cross multiply
    178,809.12x = 246,974.87 × 133,687.46
  4. Step 4: Simplify right side
    178,809.12x = 33,017,444,005.79
  5. Step 5: Solve for x
    x = 33,017,444,005.79/178,809.12
  6. Step 6: Final answer
    x = 184,651.90

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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.