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Finding the Fourth Proportional to 178,590.40, 267,885.60 and 139,177

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Solution

The fourth proportional to 178,590.40, 267,885.60 and 139,177 is: 208,765.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,590.40 : 267,885.60 = 139,177 : x
  2. Step 2: Convert to fraction form
    178,590.40/267,885.60 = 139,177/x
  3. Step 3: Cross multiply
    178,590.40x = 267,885.60 × 139,177
  4. Step 4: Simplify right side
    178,590.40x = 37,283,514,151.20
  5. Step 5: Solve for x
    x = 37,283,514,151.20/178,590.40
  6. Step 6: Final answer
    x = 208,765.50

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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.