Home / 81,164.30-121,746.45-61,481.30

Finding the Fourth Proportional to 81,164.30, 121,746.45 and 61,481.30

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Solution

The fourth proportional to 81,164.30, 121,746.45 and 61,481.30 is: 92,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,164.30 : 121,746.45 = 61,481.30 : x
  2. Step 2: Convert to fraction form
    81,164.30/121,746.45 = 61,481.30/x
  3. Step 3: Cross multiply
    81,164.30x = 121,746.45 × 61,481.30
  4. Step 4: Simplify right side
    81,164.30x = 7,485,130,016.39
  5. Step 5: Solve for x
    x = 7,485,130,016.39/81,164.30
  6. Step 6: Final answer
    x = 92,221.95

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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.