Home / 154,919.52-213,788.92-87,851.52

Finding the Fourth Proportional to 154,919.52, 213,788.92 and 87,851.52

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Solution

The fourth proportional to 154,919.52, 213,788.92 and 87,851.52 is: 121,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,919.52 : 213,788.92 = 87,851.52 : x
  2. Step 2: Convert to fraction form
    154,919.52/213,788.92 = 87,851.52/x
  3. Step 3: Cross multiply
    154,919.52x = 213,788.92 × 87,851.52
  4. Step 4: Simplify right side
    154,919.52x = 18,781,681,581.16
  5. Step 5: Solve for x
    x = 18,781,681,581.16/154,919.52
  6. Step 6: Final answer
    x = 121,235.09

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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.