Home / 138,136.77-190,652.21-102,025.78

Finding the Fourth Proportional to 138,136.77, 190,652.21 and 102,025.78

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Solution

The fourth proportional to 138,136.77, 190,652.21 and 102,025.78 is: 140,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,136.77 : 190,652.21 = 102,025.78 : x
  2. Step 2: Convert to fraction form
    138,136.77/190,652.21 = 102,025.78/x
  3. Step 3: Cross multiply
    138,136.77x = 190,652.21 × 102,025.78
  4. Step 4: Simplify right side
    138,136.77x = 19,451,440,433.97
  5. Step 5: Solve for x
    x = 19,451,440,433.97/138,136.77
  6. Step 6: Final answer
    x = 140,812.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.