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Finding the Fourth Proportional to 121,480.56, 167,642 and 67,033.20

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Solution

The fourth proportional to 121,480.56, 167,642 and 67,033.20 is: 92,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,480.56 : 167,642 = 67,033.20 : x
  2. Step 2: Convert to fraction form
    121,480.56/167,642 = 67,033.20/x
  3. Step 3: Cross multiply
    121,480.56x = 167,642 × 67,033.20
  4. Step 4: Simplify right side
    121,480.56x = 11,237,579,714.40
  5. Step 5: Solve for x
    x = 11,237,579,714.40/121,480.56
  6. Step 6: Final answer
    x = 92,505.17

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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.