Home / 138,346.99-190,932.49-80,982.86

Finding the Fourth Proportional to 138,346.99, 190,932.49 and 80,982.86

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Solution

The fourth proportional to 138,346.99, 190,932.49 and 80,982.86 is: 111,764.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,346.99 : 190,932.49 = 80,982.86 : x
  2. Step 2: Convert to fraction form
    138,346.99/190,932.49 = 80,982.86/x
  3. Step 3: Cross multiply
    138,346.99x = 190,932.49 × 80,982.86
  4. Step 4: Simplify right side
    138,346.99x = 15,462,258,253.69
  5. Step 5: Solve for x
    x = 15,462,258,253.69/138,346.99
  6. Step 6: Final answer
    x = 111,764.33

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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.