Home / 138,109.20-207,174.24-38,268.24

Finding the Fourth Proportional to 138,109.20, 207,174.24 and 38,268.24

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Solution

The fourth proportional to 138,109.20, 207,174.24 and 38,268.24 is: 57,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,109.20 : 207,174.24 = 38,268.24 : x
  2. Step 2: Convert to fraction form
    138,109.20/207,174.24 = 38,268.24/x
  3. Step 3: Cross multiply
    138,109.20x = 207,174.24 × 38,268.24
  4. Step 4: Simplify right side
    138,109.20x = 7,928,193,538.14
  5. Step 5: Solve for x
    x = 7,928,193,538.14/138,109.20
  6. Step 6: Final answer
    x = 57,405.25

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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.