Home / 138,986.96-191,796.86-75,323.39

Finding the Fourth Proportional to 138,986.96, 191,796.86 and 75,323.39

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Solution

The fourth proportional to 138,986.96, 191,796.86 and 75,323.39 is: 103,943.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,986.96 : 191,796.86 = 75,323.39 : x
  2. Step 2: Convert to fraction form
    138,986.96/191,796.86 = 75,323.39/x
  3. Step 3: Cross multiply
    138,986.96x = 191,796.86 × 75,323.39
  4. Step 4: Simplify right side
    138,986.96x = 14,446,789,309.94
  5. Step 5: Solve for x
    x = 14,446,789,309.94/138,986.96
  6. Step 6: Final answer
    x = 103,943.49

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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.