Home / 101,107.29-139,527.14-55,785.68

Finding the Fourth Proportional to 101,107.29, 139,527.14 and 55,785.68

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Solution

The fourth proportional to 101,107.29, 139,527.14 and 55,785.68 is: 76,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,107.29 : 139,527.14 = 55,785.68 : x
  2. Step 2: Convert to fraction form
    101,107.29/139,527.14 = 55,785.68/x
  3. Step 3: Cross multiply
    101,107.29x = 139,527.14 × 55,785.68
  4. Step 4: Simplify right side
    101,107.29x = 7,783,615,406.79
  5. Step 5: Solve for x
    x = 7,783,615,406.79/101,107.29
  6. Step 6: Final answer
    x = 76,983.72

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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.