Home / 136,874.22-188,882.58-76,443.09

Finding the Fourth Proportional to 136,874.22, 188,882.58 and 76,443.09

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Solution

The fourth proportional to 136,874.22, 188,882.58 and 76,443.09 is: 105,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,874.22 : 188,882.58 = 76,443.09 : x
  2. Step 2: Convert to fraction form
    136,874.22/188,882.58 = 76,443.09/x
  3. Step 3: Cross multiply
    136,874.22x = 188,882.58 × 76,443.09
  4. Step 4: Simplify right side
    136,874.22x = 14,438,768,062.37
  5. Step 5: Solve for x
    x = 14,438,768,062.37/136,874.22
  6. Step 6: Final answer
    x = 105,489.32

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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.