Home / 138,447.56-191,057.74-74,785.36

Finding the Fourth Proportional to 138,447.56, 191,057.74 and 74,785.36

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Solution

The fourth proportional to 138,447.56, 191,057.74 and 74,785.36 is: 103,203.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,447.56 : 191,057.74 = 74,785.36 : x
  2. Step 2: Convert to fraction form
    138,447.56/191,057.74 = 74,785.36/x
  3. Step 3: Cross multiply
    138,447.56x = 191,057.74 × 74,785.36
  4. Step 4: Simplify right side
    138,447.56x = 14,288,321,560.31
  5. Step 5: Solve for x
    x = 14,288,321,560.31/138,447.56
  6. Step 6: Final answer
    x = 103,203.85

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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.