Home / 109,839.60-164,629.80-82,105.20

Finding the Fourth Proportional to 109,839.60, 164,629.80 and 82,105.20

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Solution

The fourth proportional to 109,839.60, 164,629.80 and 82,105.20 is: 123,060.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,839.60 : 164,629.80 = 82,105.20 : x
  2. Step 2: Convert to fraction form
    109,839.60/164,629.80 = 82,105.20/x
  3. Step 3: Cross multiply
    109,839.60x = 164,629.80 × 82,105.20
  4. Step 4: Simplify right side
    109,839.60x = 13,516,962,654.96
  5. Step 5: Solve for x
    x = 13,516,962,654.96/109,839.60
  6. Step 6: Final answer
    x = 123,060.92

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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.