Home / 139,954.11-193,140.90-76,292.97

Finding the Fourth Proportional to 139,954.11, 193,140.90 and 76,292.97

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Solution

The fourth proportional to 139,954.11, 193,140.90 and 76,292.97 is: 105,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,954.11 : 193,140.90 = 76,292.97 : x
  2. Step 2: Convert to fraction form
    139,954.11/193,140.90 = 76,292.97/x
  3. Step 3: Cross multiply
    139,954.11x = 193,140.90 × 76,292.97
  4. Step 4: Simplify right side
    139,954.11x = 14,735,292,889.47
  5. Step 5: Solve for x
    x = 14,735,292,889.47/139,954.11
  6. Step 6: Final answer
    x = 105,286.60

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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.