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Finding the Fourth Proportional to 136,010.60, 204,015.90 and 82,788.20

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Solution

The fourth proportional to 136,010.60, 204,015.90 and 82,788.20 is: 124,182.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,010.60 : 204,015.90 = 82,788.20 : x
  2. Step 2: Convert to fraction form
    136,010.60/204,015.90 = 82,788.20/x
  3. Step 3: Cross multiply
    136,010.60x = 204,015.90 × 82,788.20
  4. Step 4: Simplify right side
    136,010.60x = 16,890,109,132.38
  5. Step 5: Solve for x
    x = 16,890,109,132.38/136,010.60
  6. Step 6: Final answer
    x = 124,182.30

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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.