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Finding the Fourth Proportional to 178,540.93, 267,812.90 and 45,421.30

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Solution

The fourth proportional to 178,540.93, 267,812.90 and 45,421.30 is: 68,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,540.93 : 267,812.90 = 45,421.30 : x
  2. Step 2: Convert to fraction form
    178,540.93/267,812.90 = 45,421.30/x
  3. Step 3: Cross multiply
    178,540.93x = 267,812.90 × 45,421.30
  4. Step 4: Simplify right side
    178,540.93x = 12,164,410,074.77
  5. Step 5: Solve for x
    x = 12,164,410,074.77/178,540.93
  6. Step 6: Final answer
    x = 68,132.33

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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.