Home / 136,919.63-188,679.92-104,690.75

Finding the Fourth Proportional to 136,919.63, 188,679.92 and 104,690.75

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Solution

The fourth proportional to 136,919.63, 188,679.92 and 104,690.75 is: 144,267.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.63 : 188,679.92 = 104,690.75 : x
  2. Step 2: Convert to fraction form
    136,919.63/188,679.92 = 104,690.75/x
  3. Step 3: Cross multiply
    136,919.63x = 188,679.92 × 104,690.75
  4. Step 4: Simplify right side
    136,919.63x = 19,753,040,867.89
  5. Step 5: Solve for x
    x = 19,753,040,867.89/136,919.63
  6. Step 6: Final answer
    x = 144,267.41

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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.