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Finding the Fourth Proportional to 178,599.96, 267,900 and 139,186.56

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Solution

The fourth proportional to 178,599.96, 267,900 and 139,186.56 is: 208,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,599.96 : 267,900 = 139,186.56 : x
  2. Step 2: Convert to fraction form
    178,599.96/267,900 = 139,186.56/x
  3. Step 3: Cross multiply
    178,599.96x = 267,900 × 139,186.56
  4. Step 4: Simplify right side
    178,599.96x = 37,288,079,424
  5. Step 5: Solve for x
    x = 37,288,079,424/178,599.96
  6. Step 6: Final answer
    x = 208,779.89

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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.