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Finding the Fourth Proportional to 121,860, 167,792.94 and 106,667.64

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Solution

The fourth proportional to 121,860, 167,792.94 and 106,667.64 is: 146,874.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,860 : 167,792.94 = 106,667.64 : x
  2. Step 2: Convert to fraction form
    121,860/167,792.94 = 106,667.64/x
  3. Step 3: Cross multiply
    121,860x = 167,792.94 × 106,667.64
  4. Step 4: Simplify right side
    121,860x = 17,898,076,918.46
  5. Step 5: Solve for x
    x = 17,898,076,918.46/121,860
  6. Step 6: Final answer
    x = 146,874.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.