Home / 138,833.46-191,589.30-75,171.06

Finding the Fourth Proportional to 138,833.46, 191,589.30 and 75,171.06

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Solution

The fourth proportional to 138,833.46, 191,589.30 and 75,171.06 is: 103,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,833.46 : 191,589.30 = 75,171.06 : x
  2. Step 2: Convert to fraction form
    138,833.46/191,589.30 = 75,171.06/x
  3. Step 3: Cross multiply
    138,833.46x = 191,589.30 × 75,171.06
  4. Step 4: Simplify right side
    138,833.46x = 14,401,970,765.66
  5. Step 5: Solve for x
    x = 14,401,970,765.66/138,833.46
  6. Step 6: Final answer
    x = 103,735.59

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1.5x scale

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.