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Finding the Fourth Proportional to 134,297.30, 201,273.15 and 81,650.90

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Solution

The fourth proportional to 134,297.30, 201,273.15 and 81,650.90 is: 122,371.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,297.30 : 201,273.15 = 81,650.90 : x
  2. Step 2: Convert to fraction form
    134,297.30/201,273.15 = 81,650.90/x
  3. Step 3: Cross multiply
    134,297.30x = 201,273.15 × 81,650.90
  4. Step 4: Simplify right side
    134,297.30x = 16,434,133,843.34
  5. Step 5: Solve for x
    x = 16,434,133,843.34/134,297.30
  6. Step 6: Final answer
    x = 122,371.29

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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.