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Finding the Fourth Proportional to 178,890.40, 268,335.60 and 108,906.40

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Solution

The fourth proportional to 178,890.40, 268,335.60 and 108,906.40 is: 163,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,890.40 : 268,335.60 = 108,906.40 : x
  2. Step 2: Convert to fraction form
    178,890.40/268,335.60 = 108,906.40/x
  3. Step 3: Cross multiply
    178,890.40x = 268,335.60 × 108,906.40
  4. Step 4: Simplify right side
    178,890.40x = 29,223,464,187.84
  5. Step 5: Solve for x
    x = 29,223,464,187.84/178,890.40
  6. Step 6: Final answer
    x = 163,359.60

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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.