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Finding the Fourth Proportional to 178,779.80, 267,780.90 and 108,536.60

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Solution

The fourth proportional to 178,779.80, 267,780.90 and 108,536.60 is: 162,568.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,779.80 : 267,780.90 = 108,536.60 : x
  2. Step 2: Convert to fraction form
    178,779.80/267,780.90 = 108,536.60/x
  3. Step 3: Cross multiply
    178,779.80x = 267,780.90 × 108,536.60
  4. Step 4: Simplify right side
    178,779.80x = 29,064,028,430.94
  5. Step 5: Solve for x
    x = 29,064,028,430.94/178,779.80
  6. Step 6: Final answer
    x = 162,568.86

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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.