Home / 100,974.46-139,344.30-55,034.03

Finding the Fourth Proportional to 100,974.46, 139,344.30 and 55,034.03

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Solution

The fourth proportional to 100,974.46, 139,344.30 and 55,034.03 is: 75,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,974.46 : 139,344.30 = 55,034.03 : x
  2. Step 2: Convert to fraction form
    100,974.46/139,344.30 = 55,034.03/x
  3. Step 3: Cross multiply
    100,974.46x = 139,344.30 × 55,034.03
  4. Step 4: Simplify right side
    100,974.46x = 7,668,677,689.81
  5. Step 5: Solve for x
    x = 7,668,677,689.81/100,974.46
  6. Step 6: Final answer
    x = 75,946.71

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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.