Home / 139,789.54-192,902.88-76,126.96

Finding the Fourth Proportional to 139,789.54, 192,902.88 and 76,126.96

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Solution

The fourth proportional to 139,789.54, 192,902.88 and 76,126.96 is: 105,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.54 : 192,902.88 = 76,126.96 : x
  2. Step 2: Convert to fraction form
    139,789.54/192,902.88 = 76,126.96/x
  3. Step 3: Cross multiply
    139,789.54x = 192,902.88 × 76,126.96
  4. Step 4: Simplify right side
    139,789.54x = 14,685,109,829.64
  5. Step 5: Solve for x
    x = 14,685,109,829.64/139,789.54
  6. Step 6: Final answer
    x = 105,051.56

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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.