Home / 154,919.34-213,390.36-109,519.20

Finding the Fourth Proportional to 154,919.34, 213,390.36 and 109,519.20

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Solution

The fourth proportional to 154,919.34, 213,390.36 and 109,519.20 is: 150,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,919.34 : 213,390.36 = 109,519.20 : x
  2. Step 2: Convert to fraction form
    154,919.34/213,390.36 = 109,519.20/x
  3. Step 3: Cross multiply
    154,919.34x = 213,390.36 × 109,519.20
  4. Step 4: Simplify right side
    154,919.34x = 23,370,341,514.91
  5. Step 5: Solve for x
    x = 23,370,341,514.91/154,919.34
  6. Step 6: Final answer
    x = 150,854.90

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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.