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Finding the Fourth Proportional to 121,667.88, 167,885.10 and 67,946.04

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Solution

The fourth proportional to 121,667.88, 167,885.10 and 67,946.04 is: 93,756.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,667.88 : 167,885.10 = 67,946.04 : x
  2. Step 2: Convert to fraction form
    121,667.88/167,885.10 = 67,946.04/x
  3. Step 3: Cross multiply
    121,667.88x = 167,885.10 × 67,946.04
  4. Step 4: Simplify right side
    121,667.88x = 11,407,127,720.00
  5. Step 5: Solve for x
    x = 11,407,127,720.00/121,667.88
  6. Step 6: Final answer
    x = 93,756.28

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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.