Home / 213,481.29-319,944.11-86,973.36

Finding the Fourth Proportional to 213,481.29, 319,944.11 and 86,973.36

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Solution

The fourth proportional to 213,481.29, 319,944.11 and 86,973.36 is: 130,346.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,481.29 : 319,944.11 = 86,973.36 : x
  2. Step 2: Convert to fraction form
    213,481.29/319,944.11 = 86,973.36/x
  3. Step 3: Cross multiply
    213,481.29x = 319,944.11 × 86,973.36
  4. Step 4: Simplify right side
    213,481.29x = 27,826,614,258.91
  5. Step 5: Solve for x
    x = 27,826,614,258.91/213,481.29
  6. Step 6: Final answer
    x = 130,346.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.