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Finding the Fourth Proportional to 179,318.80, 268,978.20 and 61,123.60

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Solution

The fourth proportional to 179,318.80, 268,978.20 and 61,123.60 is: 91,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,318.80 : 268,978.20 = 61,123.60 : x
  2. Step 2: Convert to fraction form
    179,318.80/268,978.20 = 61,123.60/x
  3. Step 3: Cross multiply
    179,318.80x = 268,978.20 × 61,123.60
  4. Step 4: Simplify right side
    179,318.80x = 16,440,915,905.52
  5. Step 5: Solve for x
    x = 16,440,915,905.52/179,318.80
  6. Step 6: Final answer
    x = 91,685.40

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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.