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Finding the Fourth Proportional to 133,991.32, 201,789.16 and 122,033.90

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Solution

The fourth proportional to 133,991.32, 201,789.16 and 122,033.90 is: 183,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,991.32 : 201,789.16 = 122,033.90 : x
  2. Step 2: Convert to fraction form
    133,991.32/201,789.16 = 122,033.90/x
  3. Step 3: Cross multiply
    133,991.32x = 201,789.16 × 122,033.90
  4. Step 4: Simplify right side
    133,991.32x = 24,625,118,172.52
  5. Step 5: Solve for x
    x = 24,625,118,172.52/133,991.32
  6. Step 6: Final answer
    x = 183,781.44

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.