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Finding the Fourth Proportional to 178,800.40, 268,200.60 and 54,141.40

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Solution

The fourth proportional to 178,800.40, 268,200.60 and 54,141.40 is: 81,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,800.40 : 268,200.60 = 54,141.40 : x
  2. Step 2: Convert to fraction form
    178,800.40/268,200.60 = 54,141.40/x
  3. Step 3: Cross multiply
    178,800.40x = 268,200.60 × 54,141.40
  4. Step 4: Simplify right side
    178,800.40x = 14,520,755,964.84
  5. Step 5: Solve for x
    x = 14,520,755,964.84/178,800.40
  6. Step 6: Final answer
    x = 81,212.10

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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.