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Finding the Fourth Proportional to 136,562.40, 204,843.60 and 80,575.20

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Solution

The fourth proportional to 136,562.40, 204,843.60 and 80,575.20 is: 120,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,562.40 : 204,843.60 = 80,575.20 : x
  2. Step 2: Convert to fraction form
    136,562.40/204,843.60 = 80,575.20/x
  3. Step 3: Cross multiply
    136,562.40x = 204,843.60 × 80,575.20
  4. Step 4: Simplify right side
    136,562.40x = 16,505,314,038.72
  5. Step 5: Solve for x
    x = 16,505,314,038.72/136,562.40
  6. Step 6: Final answer
    x = 120,862.80

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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.