Home / 138,020.21-207,074.06-49,271.75

Finding the Fourth Proportional to 138,020.21, 207,074.06 and 49,271.75

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Solution

The fourth proportional to 138,020.21, 207,074.06 and 49,271.75 is: 73,923.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,020.21 : 207,074.06 = 49,271.75 : x
  2. Step 2: Convert to fraction form
    138,020.21/207,074.06 = 49,271.75/x
  3. Step 3: Cross multiply
    138,020.21x = 207,074.06 × 49,271.75
  4. Step 4: Simplify right side
    138,020.21x = 10,202,901,315.81
  5. Step 5: Solve for x
    x = 10,202,901,315.81/138,020.21
  6. Step 6: Final answer
    x = 73,923.24

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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.