Home / 139,789.06-192,907.58-76,127.92

Finding the Fourth Proportional to 139,789.06, 192,907.58 and 76,127.92

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Solution

The fourth proportional to 139,789.06, 192,907.58 and 76,127.92 is: 105,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,789.06 : 192,907.58 = 76,127.92 : x
  2. Step 2: Convert to fraction form
    139,789.06/192,907.58 = 76,127.92/x
  3. Step 3: Cross multiply
    139,789.06x = 192,907.58 × 76,127.92
  4. Step 4: Simplify right side
    139,789.06x = 14,685,651,954.73
  5. Step 5: Solve for x
    x = 14,685,651,954.73/139,789.06
  6. Step 6: Final answer
    x = 105,055.80

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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.