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Finding the Fourth Proportional to 139,774.92, 192,671.56 and 117,073.86

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Solution

The fourth proportional to 139,774.92, 192,671.56 and 117,073.86 is: 161,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,774.92 : 192,671.56 = 117,073.86 : x
  2. Step 2: Convert to fraction form
    139,774.92/192,671.56 = 117,073.86/x
  3. Step 3: Cross multiply
    139,774.92x = 192,671.56 × 117,073.86
  4. Step 4: Simplify right side
    139,774.92x = 22,556,803,241.42
  5. Step 5: Solve for x
    x = 22,556,803,241.42/139,774.92
  6. Step 6: Final answer
    x = 161,379.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.