Home / 100,165.22-138,222.75-54,834.52

Finding the Fourth Proportional to 100,165.22, 138,222.75 and 54,834.52

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Solution

The fourth proportional to 100,165.22, 138,222.75 and 54,834.52 is: 75,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,165.22 : 138,222.75 = 54,834.52 : x
  2. Step 2: Convert to fraction form
    100,165.22/138,222.75 = 54,834.52/x
  3. Step 3: Cross multiply
    100,165.22x = 138,222.75 × 54,834.52
  4. Step 4: Simplify right side
    100,165.22x = 7,579,378,149.33
  5. Step 5: Solve for x
    x = 7,579,378,149.33/100,165.22
  6. Step 6: Final answer
    x = 75,668.76

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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.