Home / 138,360-207,540.12-49,619.04

Finding the Fourth Proportional to 138,360, 207,540.12 and 49,619.04

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Solution

The fourth proportional to 138,360, 207,540.12 and 49,619.04 is: 74,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,360 : 207,540.12 = 49,619.04 : x
  2. Step 2: Convert to fraction form
    138,360/207,540.12 = 49,619.04/x
  3. Step 3: Cross multiply
    138,360x = 207,540.12 × 49,619.04
  4. Step 4: Simplify right side
    138,360x = 10,297,941,515.88
  5. Step 5: Solve for x
    x = 10,297,941,515.88/138,360
  6. Step 6: Final answer
    x = 74,428.60

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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.