Home / 138,619.23-207,936.40-43,842.33

Finding the Fourth Proportional to 138,619.23, 207,936.40 and 43,842.33

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Solution

The fourth proportional to 138,619.23, 207,936.40 and 43,842.33 is: 65,765.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,619.23 : 207,936.40 = 43,842.33 : x
  2. Step 2: Convert to fraction form
    138,619.23/207,936.40 = 43,842.33/x
  3. Step 3: Cross multiply
    138,619.23x = 207,936.40 × 43,842.33
  4. Step 4: Simplify right side
    138,619.23x = 9,116,416,267.81
  5. Step 5: Solve for x
    x = 9,116,416,267.81/138,619.23
  6. Step 6: Final answer
    x = 65,765.89

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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.