Home / 138,629.15-191,261.24-113,091.36

Finding the Fourth Proportional to 138,629.15, 191,261.24 and 113,091.36

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Solution

The fourth proportional to 138,629.15, 191,261.24 and 113,091.36 is: 156,027.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,629.15 : 191,261.24 = 113,091.36 : x
  2. Step 2: Convert to fraction form
    138,629.15/191,261.24 = 113,091.36/x
  3. Step 3: Cross multiply
    138,629.15x = 191,261.24 × 113,091.36
  4. Step 4: Simplify right side
    138,629.15x = 21,629,994,343.02
  5. Step 5: Solve for x
    x = 21,629,994,343.02/138,629.15
  6. Step 6: Final answer
    x = 156,027.75

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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.