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Finding the Fourth Proportional to 121,370.44, 167,491.56 and 70,393

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Solution

The fourth proportional to 121,370.44, 167,491.56 and 70,393 is: 97,142.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,370.44 : 167,491.56 = 70,393 : x
  2. Step 2: Convert to fraction form
    121,370.44/167,491.56 = 70,393/x
  3. Step 3: Cross multiply
    121,370.44x = 167,491.56 × 70,393
  4. Step 4: Simplify right side
    121,370.44x = 11,790,233,383.08
  5. Step 5: Solve for x
    x = 11,790,233,383.08/121,370.44
  6. Step 6: Final answer
    x = 97,142.54

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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.