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Finding the Fourth Proportional to 121,967.75, 168,291.33 and 68,242.34

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Solution

The fourth proportional to 121,967.75, 168,291.33 and 68,242.34 is: 94,160.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,967.75 : 168,291.33 = 68,242.34 : x
  2. Step 2: Convert to fraction form
    121,967.75/168,291.33 = 68,242.34/x
  3. Step 3: Cross multiply
    121,967.75x = 168,291.33 × 68,242.34
  4. Step 4: Simplify right side
    121,967.75x = 11,484,594,160.91
  5. Step 5: Solve for x
    x = 11,484,594,160.91/121,967.75
  6. Step 6: Final answer
    x = 94,160.91

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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.