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Finding the Fourth Proportional to 101,104.35, 139,523.61 and 55,785.16

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Solution

The fourth proportional to 101,104.35, 139,523.61 and 55,785.16 is: 76,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,104.35 : 139,523.61 = 55,785.16 : x
  2. Step 2: Convert to fraction form
    101,104.35/139,523.61 = 55,785.16/x
  3. Step 3: Cross multiply
    101,104.35x = 139,523.61 × 55,785.16
  4. Step 4: Simplify right side
    101,104.35x = 7,783,346,506.41
  5. Step 5: Solve for x
    x = 7,783,346,506.41/101,104.35
  6. Step 6: Final answer
    x = 76,983.30

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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.