Home / 138,212.20-207,318.30-38,372.46

Finding the Fourth Proportional to 138,212.20, 207,318.30 and 38,372.46

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Solution

The fourth proportional to 138,212.20, 207,318.30 and 38,372.46 is: 57,558.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,212.20 : 207,318.30 = 38,372.46 : x
  2. Step 2: Convert to fraction form
    138,212.20/207,318.30 = 38,372.46/x
  3. Step 3: Cross multiply
    138,212.20x = 207,318.30 × 38,372.46
  4. Step 4: Simplify right side
    138,212.20x = 7,955,313,174.02
  5. Step 5: Solve for x
    x = 7,955,313,174.02/138,212.20
  6. Step 6: Final answer
    x = 57,558.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.