Home / 138,143,767.52-190,633,387.20-76,262,778.56

Finding the Fourth Proportional to 138,143,767.52, 190,633,387.20 and 76,262,778.56

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Solution

The fourth proportional to 138,143,767.52, 190,633,387.20 and 76,262,778.56 is: 105,239,867.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,143,767.52 : 190,633,387.20 = 76,262,778.56 : x
  2. Step 2: Convert to fraction form
    138,143,767.52/190,633,387.20 = 76,262,778.56/x
  3. Step 3: Cross multiply
    138,143,767.52x = 190,633,387.20 × 76,262,778.56
  4. Step 4: Simplify right side
    138,143,767.52x = 14,538,231,794,176,338
  5. Step 5: Solve for x
    x = 14,538,231,794,176,338/138,143,767.52
  6. Step 6: Final answer
    x = 105,239,867.53

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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.