Home / 138,209.28-207,313.81-38,369.43

Finding the Fourth Proportional to 138,209.28, 207,313.81 and 38,369.43

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Solution

The fourth proportional to 138,209.28, 207,313.81 and 38,369.43 is: 57,554.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,209.28 : 207,313.81 = 38,369.43 : x
  2. Step 2: Convert to fraction form
    138,209.28/207,313.81 = 38,369.43/x
  3. Step 3: Cross multiply
    138,209.28x = 207,313.81 × 38,369.43
  4. Step 4: Simplify right side
    138,209.28x = 7,954,512,720.83
  5. Step 5: Solve for x
    x = 7,954,512,720.83/138,209.28
  6. Step 6: Final answer
    x = 57,554.11

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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.