Home / 138,653.28-207,979.91-45,159.03

Finding the Fourth Proportional to 138,653.28, 207,979.91 and 45,159.03

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Solution

The fourth proportional to 138,653.28, 207,979.91 and 45,159.03 is: 67,738.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,653.28 : 207,979.91 = 45,159.03 : x
  2. Step 2: Convert to fraction form
    138,653.28/207,979.91 = 45,159.03/x
  3. Step 3: Cross multiply
    138,653.28x = 207,979.91 × 45,159.03
  4. Step 4: Simplify right side
    138,653.28x = 9,392,170,938.64
  5. Step 5: Solve for x
    x = 9,392,170,938.64/138,653.28
  6. Step 6: Final answer
    x = 67,738.54

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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.