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Finding the Fourth Proportional to 177,912.90, 267,020.55 and 72,807.30

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Solution

The fourth proportional to 177,912.90, 267,020.55 and 72,807.30 is: 109,272.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,912.90 : 267,020.55 = 72,807.30 : x
  2. Step 2: Convert to fraction form
    177,912.90/267,020.55 = 72,807.30/x
  3. Step 3: Cross multiply
    177,912.90x = 267,020.55 × 72,807.30
  4. Step 4: Simplify right side
    177,912.90x = 19,441,045,290.02
  5. Step 5: Solve for x
    x = 19,441,045,290.02/177,912.90
  6. Step 6: Final answer
    x = 109,272.83

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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.