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Finding the Fourth Proportional to 164,936.40, 247,404.60 and 54,128.40

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Solution

The fourth proportional to 164,936.40, 247,404.60 and 54,128.40 is: 81,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,936.40 : 247,404.60 = 54,128.40 : x
  2. Step 2: Convert to fraction form
    164,936.40/247,404.60 = 54,128.40/x
  3. Step 3: Cross multiply
    164,936.40x = 247,404.60 × 54,128.40
  4. Step 4: Simplify right side
    164,936.40x = 13,391,615,150.64
  5. Step 5: Solve for x
    x = 13,391,615,150.64/164,936.40
  6. Step 6: Final answer
    x = 81,192.60

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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.