Home / 138,296.91-190,855.77-77,867.54

Finding the Fourth Proportional to 138,296.91, 190,855.77 and 77,867.54

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Solution

The fourth proportional to 138,296.91, 190,855.77 and 77,867.54 is: 107,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,296.91 : 190,855.77 = 77,867.54 : x
  2. Step 2: Convert to fraction form
    138,296.91/190,855.77 = 77,867.54/x
  3. Step 3: Cross multiply
    138,296.91x = 190,855.77 × 77,867.54
  4. Step 4: Simplify right side
    138,296.91x = 14,861,469,027.21
  5. Step 5: Solve for x
    x = 14,861,469,027.21/138,296.91
  6. Step 6: Final answer
    x = 107,460.60

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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.