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Finding the Fourth Proportional to 119,171.60, 178,704.60 and 40,264.40

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Solution

The fourth proportional to 119,171.60, 178,704.60 and 40,264.40 is: 60,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,171.60 : 178,704.60 = 40,264.40 : x
  2. Step 2: Convert to fraction form
    119,171.60/178,704.60 = 40,264.40/x
  3. Step 3: Cross multiply
    119,171.60x = 178,704.60 × 40,264.40
  4. Step 4: Simplify right side
    119,171.60x = 7,195,433,496.24
  5. Step 5: Solve for x
    x = 7,195,433,496.24/119,171.60
  6. Step 6: Final answer
    x = 60,378.76

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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.