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Finding the Fourth Proportional to 178,440.40, 267,433.80 and 73,140.40

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Solution

The fourth proportional to 178,440.40, 267,433.80 and 73,140.40 is: 109,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,440.40 : 267,433.80 = 73,140.40 : x
  2. Step 2: Convert to fraction form
    178,440.40/267,433.80 = 73,140.40/x
  3. Step 3: Cross multiply
    178,440.40x = 267,433.80 × 73,140.40
  4. Step 4: Simplify right side
    178,440.40x = 19,560,215,105.52
  5. Step 5: Solve for x
    x = 19,560,215,105.52/178,440.40
  6. Step 6: Final answer
    x = 109,617.64

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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.