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Finding the Fourth Proportional to 178,698.39, 268,056.81 and 45,579.81

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Solution

The fourth proportional to 178,698.39, 268,056.81 and 45,579.81 is: 68,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,698.39 : 268,056.81 = 45,579.81 : x
  2. Step 2: Convert to fraction form
    178,698.39/268,056.81 = 45,579.81/x
  3. Step 3: Cross multiply
    178,698.39x = 268,056.81 × 45,579.81
  4. Step 4: Simplify right side
    178,698.39x = 12,217,978,469.01
  5. Step 5: Solve for x
    x = 12,217,978,469.01/178,698.39
  6. Step 6: Final answer
    x = 68,372.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.