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Finding the Fourth Proportional to 178,289.72, 267,435 and 45,170

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Solution

The fourth proportional to 178,289.72, 267,435 and 45,170 is: 67,755.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,289.72 : 267,435 = 45,170 : x
  2. Step 2: Convert to fraction form
    178,289.72/267,435 = 45,170/x
  3. Step 3: Cross multiply
    178,289.72x = 267,435 × 45,170
  4. Step 4: Simplify right side
    178,289.72x = 12,080,038,950
  5. Step 5: Solve for x
    x = 12,080,038,950/178,289.72
  6. Step 6: Final answer
    x = 67,755.11

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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.